Math & Conversion Calculators

Solve percentages, fractions, GPA, and unit conversions with free online math calculators for school, work, and daily calculations.

This category groups quick-answer calculators for arithmetic, measurement changes, grade math, and real-world conversion tasks that people search for every day.

All Math & Conversion Calculators

Trigonometric Functions Calculator

Trig Triangle Calculator

Square Feet Converter

Seconds Converter

Scale Conversion Calculator

Kilometer Calculator

Metric to Inches

Metric to SAE Calculator

kg to Liter Calculator

Feet to Miles Calculator

CCF to Therms Calculator

Cents to Euros Calculator

Capacitance Conversion Calculator

Barometric Pressure Conversion Calculator

ATM Conversion Calculator

Astronomical Unit Calculator

Volume Hexagonal Pyramid Calculator

Kilobytes to Megabytes Calculator

Hex to RGB Calculator

RGB to Hex Calculator

Byte Converter

Binary to Hexadecimal Calculator

Lbs to kg Converter

kg to Lbs Converter

mL to CC Converter

mL to uL Conversion

Gallons to Quarts Converter

Gallons to Cups Converter

Cups to Pints Converter

Cups to Gallons Converter

Acres to Hectares Converter

Square Footage Circle Calculator

Kelvin to Fahrenheit Calculator

In to cm Calculator

Gallons to Grams Calculator

Fahrenheit to Celsius Calculator

Cups to Oz Calculator

cm to In Calculator

Centigrade to Celsius Calculator

Celsius to Fahrenheit Calculator

Celsius Converter

Celsius Converter

Fahrenheit Calculator

Stone to Lbs Calculator

Pounds to Stone Calculator

Improper Fraction to Mixed Number Calculator

Simplify Fractions Calculator

Fractional Exponent Calculator

Equivalent Fractions Calculator

Divide Fractions Calculator

Comparing Fractions Calculator

Decimal to Fraction Calculator

Wind Chill Calculator

Heat Index Calculator

Watts to Amps Converter

Pixel to Em/Rem Converter

Percentage to Fraction Converter

Vector Magnitude Calculator

Cross Product Calculator

Molality Calculator

Letter Grade to GPA Converter

Text to Binary Converter

Mann-Whitney U Calculator

Pythagorean Triples Calculator

Liters to Gallons Converter

Ounces to Cups Converter

mL to Cups Calculator

mL to kg Calculator

Tablespoons to Cups Converter

Coulomb's Law Calculator

Boyle's Law Calculator

Velocity Calculator

Electrical Resistance Calculator

Net Force Calculator

Friction Force Calculator

Potential Energy Calculator

Kinetic Energy Calculator

Wind Speed Converter

Specific Heat Calculator

Wave Speed Calculator

Voltage Divider Calculator

Luminance Converter

Time Zone Converter

Shoe Size Converter

Number to Words Converter

Weighted Average Calculator

Stem-and-Leaf Plot Calculator

Cumulative Frequency Calculator

Bayes' Theorem Calculator

Simple Interest Calculator

Sales Tax Calculator

Frequency Calculator

Density Calculator

Boolean Algebra Calculator

Base Converter

Angle Converter

Torque Converter

Roman Numeral Converter

Power Converter

Energy Converter

Pressure Converter

Effect Size Calculator

Area Converter

Working Days Calculator

Time Addition/Subtraction Calculator

Parabola Calculator

Absolute Value Inequality Calculator

Coordinate Plane Calculator

Anti-Logarithm Calculator

Decibel (dB) Calculator

Pearson Correlation Calculator

Absolute Value Equation Calculator

Acreage Calculator

Age Calculator

Area Calculator

Arc Length Calculator

Average Calculator

Average Percentage Calculator

Binary Converter

Complex Number Calculator

Cohen's d Effect Size Calculator

Critical Value Calculator

Cubic Feet Calculator

Cubic Meter Calculator

Cubic Yards to Tons Calculator

Cups to Tablespoons/Teaspoons Converter

Decagram to Gram Converter

Decimal to Percent Converter

Doubling Time Calculator

Elimination Method Calculator

Exponential Notation Calculator

Factoring Trinomials Calculator

Five-Number Summary Calculator

Feet and Inches Calculator

Feet to Inches Calculator

Force Converter

Fraction Calculator

Fraction to Percent Calculator

Gallon Calculator

Gallons to Pounds Converter

GPA Calculator

Half-Life Calculator

Height in Inches Calculator

Hex Calculator

Inches to Fraction Calculator

Interval Notation Calculator

Inverse Variation Calculator

Length Converter

Light Year Conversion

Mean Median Mode Range Calculator

Military Time Converter

Modulo Calculator

Newton Meter Calculator

Normal Distribution Calculator

P-Value Calculator

Partial Fraction Decomposition Calculator

Percent to Goal Calculator

Percentage Calculator

Percentage Change Calculator

Percentage Decrease Calculator

Percentage Difference Calculator

Percentage Increase Calculator

Percentage of a Percentage Calculator

Percentage of a Percentage Calculator

Percentage Point Calculator

Polynomial Division Calculator

Prime Number Checker

Quadratic Formula Calculator

Random Number Generator

Ratio Calculator

Relative Change Calculator

Right Triangle Calculator

Rounding Calculator

Skewness & Kurtosis Calculator

Significant Figures Calculator

Sample Size Calculator

Slope Percentage Calculator

Substitution Method Calculator

Surface Area Calculator

Synthetic Division Calculator

System of Equations Calculator

Temperature Converter

Time Percentage Calculator

Triangle Calculator

Volume Calculator

Volume Converter

Weight Converter

Factorial Calculator

Interquartile Range (IQR) Calculator

Discount Calculator

Centripetal Force Calculator

Circle Calculator

Hexagon Calculator

Polygon Area Calculator

Cylinder Volume Calculator

Cone Volume Calculator

Sphere Volume Calculator

Linear Regression Calculator

F-Distribution Calculator

Relative Frequency Calculator

Linear Inequality Calculator

Elapsed Time Calculator

Date Difference Calculator

Height Converter

Grams to Cups Converter

Grams to Fl Oz Calculator

Recipe Serving Size Scaler

Speed Converter

Fuel Economy Converter

Flow Rate Converter

Poisson Distribution Calculator

VAT Calculator

Hypergeometric Calculator

Truth Table Generator

Clothing Size Converter

Ring Size Converter

Capacitor Charge Calculator

Dot Product Calculator

Kilowatt-Hours (kWh) Calculator

Percentage Discount Calculator

Multiplying Scientific Notation Calculator

Scientific Notation Equation Calculator

Grams to Calories Calculator

Binary Fraction Calculator

Fraction to Decimal Calculator

Convert Fraction to Percentage Calculator

Graphing Inequalities 1D Calculator

Graphing Quadratic Inequalities Calculator

Polynomial Graphing Calculator

Time Unit Converter

Adding Fractions Calculator

Adding and Subtracting Fractions Calculator

Subtracting Fractions Calculator

Egyptian Fraction Calculator

Multiplying Fractions Calculator

Mixed Number to Improper Fraction Calculator

Unix Time Calculator

Perimeter of a Triangle With Fractions Calculator

Spiral Length Calculator

Stone to kg Calculator

Miracle Calculator

Kelvin to Celsius Calculator

Kilometers to Miles Calculator

Liters to cL Calculator

Liters to Pounds Calculator

Quarts to Pounds Calculator

Radians to Degrees Calculator

mL to Lbs Calculator

kg to Stones Converter

Lbs to Stone Converter

Acres to Square Feet Converter

Cups to Quarts Converter

Gallons to Cubic Feet Calculator

Gallons to Pints Converter

Hectares to Acres Converter

mL to Oz Converter

Percent Time Calculator

kg to Stones Converter

Acres to Hectares Converter Calculator

Acres to Square Feet Converter Calculator

Centimeter Calculator

PSI to GPM Calculator

Square Meter Converter

Yard Conversion Calculator

Length Width Area Rectangle Calculator

Kelvin Converter

Joules to Volts Calculator

Inch Converter

Hours to Years

Hours to Week

Hours to Days

Gematria Calculator

Gallon to Tons Calculator

Feet to Meters Calculator

Gal to kg Calculator

g to Oz

g to Lbs

Greek Gematria Calculator

Hardness Conversion Calculator

Hour Converter

Imperial Calculator

Inch to Meter

kg to Gallons

Liter CC Calculator

Leet Speak Calculator

kPa Conversion Calculator

Kilometer Meter Conversion Calculator

Knots to Kph

Lbs to g Converter

Lbs to Newton Converter

Lbs to PSI Calculator

Meters to Feet Calculator

Meters to Feet Calculator

Meter Conversion Calculator

Mbps Converter

Mbps to Gbps Calculator

Mcg to Mg Calculator

Mcg to mL Calculator

Measurement Converter

Metric Converter

M/s to km/h Calculator

Minutes to Days Calculator

Milliseconds Converter

Million to Billion Calculator

Million to Lakh Calculator

Millimeter Calculator

Mg to Lbs Calculator

MPa Conversion Calculator

Mile Conversion Calculator

mg to mL Calculator

Micrometer Conversion Calculator

Mil Conversion Calculator

Minute Converter

Millimeters (mm) Calculator

Natural Gas Converter

Distance Converter

Dimes to Dollars Calculator

Degrees to Seconds Calculator

Degrees to Minutes Calculator

Degrees Minutes Seconds Calculator

dBm to Watts Calculator

Days to Weeks Calculator

Crore to Million Calculator

Crore to Lakh Calculator

Conversion Calculator

cm to M Calculator

Color Converter

Coordinates Converter

CPS Converter

Day Converter

Decimeter to Meter Calculator

Dimensional Analysis Calculator

Dm Conversion Calculator

Feet Converter

Ares to Hectares Calculator

Cents to Dollars Calculator

Mg to CC Calculator

Newton to Joules Calculator

Nickels to Dollars Calculator

Nm Converter

Number to Million

Paper Quantity

Pascal Conversion

Pennies to Dollars

Pint to Pound

Pixels to Inches Calculator

Pounds Ounces Calculator

PPM Calculator

PSI Conversion Calculator

Quantity Converter Calculator

Px to Em Calculator

Radiation Converter

Rms to Watts Calculator

Tbsp to Grams Calculator

Tbsp to mL Calculator

Torque to Horsepower Calculator

Torr to ATM Calculator

Tsp mL Converter

Tsp to Grams Calculator

Unicode Text Calculator

Weeks to Months Calculator

Weird Units Calculator

Yards to Meters Calculator

Years to Decades Calculator

Hexagonal Pyramid Surface Area Calculator

Surface Area Volume Ratio Calculator

Area Oblique Triangle Calculator

Area Obtuse Triangle Calculator

Area Of Hemisphere Calculator

Area Quadrilateral Calculator

Area Triangle Coordinates Calculator

Binary Addition Calculator

Binary Division Calculator

Binary Multiplication Calculator

Binary Operations Calculator

Binary Subtraction Calculator

Chord Length Calculator

Circle Length Calculator

Crescent Area Calculator

Cross Sectional Area Calculator

Cube Volume Calculator

Cuboid Surface Area Calculator

Cuboid Volume Calculator

Decagon Area Calculator

Decimal Calculator

Dodecagon Area Calculator

Ellipse Area

Ellipsoid Volume Calculator

Equilateral Triangle Area

Frustum Cone Area

Heptagon Area Calculator

Hexagonal Pyramid Calculator

Hollow Cylinder Volume

Irregular Polygon Area Calculator

Irregular Trapezoid Area Calculator

Isosceles Trapezoid Area Calculator

Isosceles Triangle Area Calculator

Kite Area Calculator

Parallelogram Area Calculator

Pyramid Volume Calculator

Quarter Circle Area Calculator

Rectangular Prism Volume Calculator

Rectangular Pyramid Volume Calculator

Rhombus Area Calculator

Right Trapezoid Area Calculator

Scalene Triangle Area Calculator

Segment Area Calculator

Semicircle Area Calculator

Square Area Calculator

Square Pyramid Volume Calculator

Terminating Decimals Calculator

Tetrahedron Volume Calculator

Torus Surface Area Calculator

Torus Volume Calculator

Trapezoidal Prism Volume Calculator

Triangle Area Calculator

Triangle Length Calculator

Triangular Pyramid Volume Calculator

Truncated Cone Volume Calculator

Volume Of Hemisphere Calculator

Angstrom to Nm Conversion

ATM to Pascals Conversion

Bar to ATM Conversion Calculator

Bar to PSI Conversion

Bar to Psig Conversion Calculator

Billion to Trillion Converter

CC to Grams Converter

CC to Liter Converter

CC to Oz Converter

Ccf to Gallons Conversion Calculator

Cent to Square Meter Converter

Cgs System Of Units Calculator

cm to ft In Converter

cm to Km Conversion

cm to Mm Conversion

Cubic Feet to Cubic Meters Calculator

Cubic Feet to Pounds Calculator

Cubic Inches to Gallons Calculator

Cubic Meter to Ton Calculator

Drops to mL Conversion Calculator

Fluid Ounces to Pounds Conversion

Foot to Centimeter Converter

Gaj to Square Yard Converter

Gr to mL Converter

Gr to Tsp Converter

Gram to Liter Conversion Calculator

Grams In mL Converter

Imperial to Metric Conversion

Inch Lbs to Nm Calculator

Inch Pounds to Foot Pounds Calculator

Inches to Yard Conversion Calculator

Katha to Square Feet Converter

kg Cm2 to PSI Converter

kg to Ounce Converter

Km to Feet Conversion Calculator

Kpa to ATM Conversion

Kpa to Mmhg Conversion Calculator

Kpa to PSI Conversion Calculator

Ksi to Mpa Conversion Calculator

Ksi to PSI Conversion

Lat Long to Utm Calculator

Lot Size to Acres Calculator

Lowercase to Uppercase Converter

Mesh to Micron Converter

Meter to Mile Conversion

Metric to Imperial Conversion

Metric to Standard Converter

Mg to Tablespoon Converter

Mg to Teaspoon Converter

Micron to Mil Conversion Calculator

Mil to Inch Conversion

Mil to Mm Conversion

Million to Thousand Converter

Minutes to Years Conversion

Mm to ATM Conversion Calculator

Mm to Foot Converter

Mm to Km Conversion

Mm to M Conversion Calculator

Mmhg to ATM Conversion

Mpa to PSI Conversion Calculator

Mpa to Psig Conversion

Ms to Seconds Conversion

Nm to In Lbs Calculator

Number to Billion Converter

Ounce to kg Converter

Oz to CC Converter

Pa to PSI Converter

ppm to Mgl Converter

PSI to ATM Conversion Calculator

Psig to Psia Conversion Calculator

Quarts to Cups Converter

Quarts to Gallons Converter

Seconds to Days Converter

Seconds to Hours Converter

Seconds to Minutes Converter

Seconds to Years Conversion Calculator

Uppercase to Lowercase Converter

Weeks to Years Converter

Yard to Meter Conversion Calculator

Yard to Mile Converter

2d Distance Calculator

3d Distance Calculator

A Bi Form Calculator

Aaa Triangle Calculator

Aas Triangle Calculator

Abc Triangle

Absolute Change Calculator

Absolute Value Calculator

Acute Triangle

Add Subtract Polynomials Calculator

Addition

Adjoint Matrix Calculator

And Calculator

Antilog Calculator

Arccos Calculator

Arcsin Calculator

Arctan Calculator

Arcus Tangent

Area Of A Trapezoid Calculator

Arithmetic Sequence Calculator

Asa Triangle

Associative Property Calculator

Babylonian Numbers

Bessel Function

Bilinear Interpolation Calculator

Bit Shift Calculator

Bitwise Calculator

Box Method Calculator

Cartesian To Polar

Catenary Curve Calculator

Ceiling Function Calculator

Center Of Ellipse Calculator

Center Of Mass

Central Angle Calculator

Centroid

Change Of Base Calculator

Characteristic Polynomial Calculator

Chinese Remainder

Cholesky Decomposition Calculator

Circle Center Calculator

Circle Diameter Calculator

Circle Equation

Circle Formula

Circle Measurements Calculator

Circle Perimeter Calculator

Circumference To Diameter Calculator

Circumference

Circumscribed Circle Calculator

Classifying Triangles Calculator

Clock Angle Calculator

Cofactor Expansion Old Calculator

Cofactor Matrix

Cofunction Calculator

Collatz Conjecture Calculator

Column Space

Common Denominator

Compatible Numbers

Complementary Angles

Complex Root Calculator

Condense Logarithms Calculator

Condition Number Calculator

Conic Sections Calculator

Conjugate

Consecutive Integers Calculator

Convolution Calculator

Coordinate Grid Calculator

Corner Point

Cos 1 Calculator

Cos 2 Theta Calculator

Cos Inverse Calculator

Cos

Cosh Calculator

Cosine Similarity

Csc Calculator

Cube Calculator

Cubic Equation Calculator

Cubic Feet Cylinder Calculator

Cubic In Cylinder

Cubic Yards Cylinder

Cuboid Calculator

Cycloid

Cyclomatic Complexity

Cylinder Circumference Calculator

Cylinder Diameter Calculator

Cylindrical Coordinates Calculator

Decagon Calculator

Decimal To Minutes Degrees Calculator

Determinant Calculator

Diagonal Of Rectangle Calculator

Diagonalize Matrix

Diameter Of Cone Calculator

Diameter To Radius

Diamond Problem

Digital Root Calculator

Direct Variation Calculator

Discriminant Calculator

Distance

Distributive Property Old

Dividing Exponents Calculator

Dividing Radicals Calculator

Divisibility Test

Divisor

Dodecagon Calculator

Double Angle Formula Calculator

Double Angle Identities Calculator

Double Angle

E Power X Calculator

Eigenvalue Eigenvector Calculator

Ellipse Circumference Calculator

Ellipse Perimeter

Ellipse Standard Form

Ellipse

Endpoint Calculator

Engineering Notation

Equilateral Triangle

Equivalent Ratio

Error Function Calculator

Euclidean Algorithm Calculator

Euclidean Distance Calculator

Expanded Form

Expanding Logarithms

Exponential Function Calculator

Fibonacci Calculator

Fifth Root

Floor Division

Floor Function Calculator

Foci Of Ellipse

Foil

Fourth Root

Fundamental Counting Principle Calculator

Gamma Function

Gauss Jordan Elimination Calculator

Gcd Calculator

Gcf And Lcm Calculator

Gcf Calculator

Generic Rectangle Calculator

Geometric Mean

Geometric Sequence

Golden Ratio Calculator

Golden Rectangle Calculator

Gradient

Gram Schmidt Calculator

Great Circle Calculator

Greater Less Calculator

Greatest Common Denominator

Hadamard Product Calculator

Half Angle Calculator

Harmonic Mean Calculator

Harmonic Number Calculator

Height Of Cone

Height Of Cylinder Calculator

Heptagon Calculator

Herons Formula Calculator

Hyperbolic Functions Calculator

Hypotenuse Calculator

I Number

Imaginary Number

Inscribed Angle Calculator

Integer

Inverse Cosine Calculator

Inverse Sine Calculator

Inverse Tangent Calculator

Inverse Trigonometric

Involute Function Calculator

Is Modulo Associative Calculator

Isosceles Right Triangle

Isosceles Trapezoid Calculator

Isosceles Triangle A Calculator

Isosceles Triangle Angles

Isosceles Triangle Height

Isosceles Triangle Side Calculator

Isosceles Triangle

Lagrange Error Bound Calculator

Lateral Area Of Cone Calculator

Lateral Area Trapezoidal Prism Calculator

Lateral Surface Area Cylinder Calculator

Latus Rectum Calculator

Law Of Cosines

Law Of Sines

Lcd Calculator

Lcm

Least Common Denominator Calculator

Least Common Factor

Least Squares Regression Calculator

Length Of A Line Segment

Length Of A Rectangle

Linear Combination

Linear Independence

Linear Interpolation Calculator

Log 2 Calculator

Long Addition Calculator

Long Multiplication Calculator

Long Subtraction Calculator

Lowest Common Denominator Calculator

Lowest Term

Lu Decomposition Calculator

Luhn Calculator

Magic Square Calculator

Manhattan Distance Calculator

Math Power

Matrix Addition

Matrix By Scalar Calculator

Matrix Inverse Calculator

Matrix Multiplication

Matrix Norm Calculator

Matrix Power Calculator

Matrix Rank Calculator

Matrix Trace Calculator

Matrix Transpose

Mayan Numeral Calculator

Mean Calculator

Midpoint Calculator

Minutes To Decimals Degrees Calculator

Mobius Strip

Moment Of Inertia

Multiplication Calculator

Multiplicative Inverse Calculator

Multiplying Binomials Calculator

Multiplying Exponents

Multiplying Polynomials Calculator

Multiplying Radicals

Negative Log Calculator

Nor Calculator

Null Space Calculator

Oblique Triangle Calculator

Obtuse Triangle Calculator

Octagon Calculator

Ones Complement Calculator

Or Calculator

Order Of Magnitude Calculator

Orthocenter

Parallel Line Calculator

Parallelogram Perimeter

Partial Products Old Calculator

Pascals Triangle Calculator

Pentagon Calculator

Perfect Cube

Perfect Square Calculator

Perfect Square Trinomial Calculator

Perimeter Quadrilateral

Perimeter

Perp Line Calculator

Phase Shift

Pi Calculator

Place Value Calculator

Point Slope Form

Polar Decomposition Calculator

Polar Form Calculator

Polar To Cartesian Calculator

Polar To Rectangular Calculator

Polish Notation Calculator

Polygon Angle Calculator

Potato

Power Function Calculator

Power Of 10 Calculator

Power Of 2

Power Reducing

Power Set

Powers Of I Calculator

Prisoners Dilemma Calculator

Proportion Calculator

Pseudoinverse Calculator

Psi To Inches Of Water Conversion Calculator

Pyramid Angle Calculator

Pythagoras Triangle

Qr Decomposition

Quadrilateral Calculator

Quarter Circle Perimeter Calculator

Quarter Circle

Quaternion Calculator

Queueing Theory Calculator

Quotient Calculator

Radical Calculator

Radius Of Cone Calculator

Radius Of Cylinder Calculator

Radius Of Sphere

Rational Exponents Calculator

Rational Zeros Calculator

Rationalize Denominator Calculator

Reciprocal Calculator

Rectangle Diagonal Angle

Rectangle Scale Factor

Rectangle

Rectangular Prism Calculator

Rectangular To Polar

Reference Angle Calculator

Regular Polygon

Relatively Prime

Remainder Calculator

Reverse Foil

Right Circular Cone Calculator

Right Cylinder Calculator

Right Rectangular Pyramid Calculator

Right Square Pyramid

Right Trapezoid

Rise Over Run Calculator

Root Mean Square Calculator

Rotation Calculator

Row Echelon Form

Rsa Calculator

Sas Triangle

Scalene Triangle

Scatter Plot

Sec Calculator

Segment Addition Postulate

Sequence

Set Builder

Sig Fig Calculator

Similar Right Triangles

Similar Triangles Calculator

Simplify Cube Root Calculator

Simplify Radicals

Simplify Ratio Calculator

Sin 1

Sin 2 Theta

Sin Cosine Tangent Calculator

Sin Degrees Calculator

Sin Theta

Sin Triangle

Sin

Sine Function Calculator

Singular Values Calculator

Sinh

Slant Height Calculator

Slope

Solve Similar Triangles

Special Right Triangles Calculator

Sphere Calculator

Sphere Equation

Spherical Coordinates Calculator

Square Calculator

Square Centimeters To Square Millimeters Converter

Square Diagonal

Square Feet Triangle

Square Miles To Square Km Converter

Square Perimeter

Square Pyramid Calculator

Square Root

Ssa Triangle Calculator

Sss Triangle Calculator

Standard Equation Circle

Standard Form

Standard Notation

Star Shape Calculator

String Girdling Calculator

Subset Calculator

Subtraction

Surface Area Of A Rectangle Calculator

Volume Of A Parallelepiped Calculator

Volume Of A Triangular Prism Calculator

Capital Case Converter

Cosine Triangle Calculator

Cot Calculator

Coterminal Angle

Cramers Rule Calculator

Cross Multiplication Calculator

Length And Width Of Rectangle Given Perimeter Calculator

Perimeter Of A Rectangle With Given Area

Sum Difference Identities Calculator

Sum Of Digits Calculator

Sum Of Series Calculator

Sum Product Calculator

Supplementary Angles

Surface Area Of A Rectangular Pyramid

Surface Area Of A Triangular Prism

Svd Calculator

Tan 1

Tan Inverse Calculator

Tan

Tangent Angle

Tangent Ratio Calculator

Tanh Calculator

Tensor Product

Theta

Trapezoid Angle Calculator

Trapezoid Height

Trapezoid Midsegment

Trapezoid Perimeter Calculator

Trapezoid Side Calculator

Trapezoid

Triangle Angle Calculator

Triangle Congruence

Triangle Degree

Triangle Height Calculator

Triangle Inequality

Triangle Perimeter Calculator

Triangle Ratio Calculator

Triangle Scale Factor

Triangle Side Angle Calculator

Triangle Side Calculator

Triangle Similarity Calculator

Triangle Slope Calculator

Triangle Vertices

Triangular Numbers Calculator

Triangular Prism

Triangulation Calculator

Trig Degree Calculator

Trig

Trigonometry Calculator

Truncated Cone

Twos Complement Calculator

Union Intersection Calculator

Unit Circle Calculator

Unit Rate

Unit Vector

Uses Of Modulo Calculator

Vector Addition

Vector Direction Calculator

Vector

Base Of A Triangle Calculator

Centroid Of A Triangle Calculator

Check Similarity In Right Triangles

Circumcenter Of A Triangle Calculator

Completing The Square Practice Calculator

Completing The Square Works

Cube V A D Calculator

Dimensions Of A Rectangle Calculator

Distance Between Two Points Calculator

Distance From Point to Plane Calculator

Equation Circle Diameter Endpoints

Exact Value Of Trig Functions Calculator

Height Of A Square Pyramid Calculator

Integration By Completing The Square Calculator

Interior and Exterior Triangle Angles Calculator

Modulo Of Negative Numbers

Modulo Order Of Operations Calculator

Perimeter Of A Right Triangle Calculator

Perimeter Of A Sector Calculator

Ratios Of Directed Line Segments

Round to The Nearest Cent Calculator

Round to The Nearest Dollar Calculator

Round to The Nearest Hundred Calculator

Round to The Nearest Hundredth Calculator

Round to The Nearest Integer Calculator

Round to The Nearest Penny Calculator

Round to The Nearest Tenth Calculator

Round to The Nearest Thousand Calculator

Round to The Nearest Thousandth Calculator

Slant Height Of Cone Calculator

Solving By Completing The Square Calculator

Square Of A Binomial Calculator

Standard to General Form Circle

Sum Of Linear Number Sequence Calculator

Tangent Circle

Triangle 30 60 90 Calculator

Triangle 45 45 90 Calculator

Trig Function

Trig Identities Calculator

Width Of A Rectangle Calculator

Trigonometric Functions

Vector Projection Calculator

Xor Calculator

Y Intercept Calculator

Volume to Density Calculator

Angle Between Two Vectors Calculator

Average Rate Of Change Calculator

Descartes Rule Of Signs Calculator

Exterior Angles Of A Triangle Calculator

General Form Equation Circle Calculator

General to Standard Form Circle

Intersection Of Two Lines Calculator

Isosceles Right Triangle Hypotenuse

Line Equation From Two Points Calculator

Linear Feedback Shift Register Calculator

Midsegment Of A Triangle

Power Of A Power Calculator

Radius Of A Circle Calculator

Ratio Of 2 Numbers Calculator

Ratio Of 3 Numbers Calculator

Round to The Nearest Ten Calculator

Square Feet Of Rectangle Calculator

Square In A Circle Calculator

Square Inches Of A Circle Calculator

Binomial Coefficient Calculator

Circle Theorems Calculator

Coin Rotation Paradox Calculator

Fermats Little Theorem Calculator

Hilberts Hotel Paradox Calculator

Triangle Proportionality Theorem Calculator

Triangle Sum Theorem Calculator

Ugly Duckling Theorem Calculator

Line Of Intersection Of Two Planes Calculator

Missing Side Of A Right Triangle Calculator

Perimeter Of A Triangle With Vertices

Standard Form to Slope Intercept Form Calculator

Frequently Asked Questions

How do I calculate percentage increase?

Percentage increase formula: ((New Value - Old Value) / Old Value) × 100. Example: price increases from $50 to $65. Calculation: ((65 - 50) / 50) × 100 = 30% increase. Common uses: salary raises, price changes, sales growth. Remember: if the new value is smaller, you have a percentage decrease instead. Our percentage calculator handles both increases and decreases automatically, showing you the exact change and final amount.

What's the difference between percentage and percentile?

Percentage is a proportion out of 100 (50% means 50 out of 100). Percentile is a position in a ranked dataset (50th percentile means you're above 50% of the group). Example: scoring 85% on a test means you got 85 out of 100 points. Being in the 85th percentile means you scored better than 85% of test-takers. Percentages measure performance; percentiles measure rank. Used differently in tests, statistics, and growth charts.

How do I convert fractions to decimals?

Divide the numerator (top number) by the denominator (bottom number). Examples: 1/4 = 1 ÷ 4 = 0.25, 3/8 = 3 ÷ 8 = 0.375, 2/3 = 2 ÷ 3 = 0.666... (repeating). For mixed numbers like 2 1/2, convert the fraction part (1/2 = 0.5) and add to the whole number (2 + 0.5 = 2.5). Our fraction calculator handles all types including complex fractions, and can convert to percentages too.

What are common measurement conversions?

Essential conversions: Length: 1 inch = 2.54 cm, 1 foot = 30.48 cm, 1 mile = 1.609 km. Weight: 1 ounce = 28.35 g, 1 pound = 0.453 kg, 1 kg = 2.205 lbs. Volume: 1 cup = 237 ml, 1 pint = 473 ml, 1 gallon = 3.785 L. Temperature: °C = (°F - 32) × 5/9, °F = (°C × 9/5) + 32. Our conversion calculators handle all these plus specialty units for cooking, construction, and science.

How do I calculate percentage change?

Percentage change formula: ((New - Old) / |Old|) × 100. Positive result = increase, negative = decrease. Example 1: Stock goes from $100 to $120: ((120-100)/100) × 100 = +20%. Example 2: Price drops from $80 to $60: ((60-80)/80) × 100 = -25%. Used for tracking: stock performance, weight loss, sales trends, economic indicators. Use absolute value of old value in denominator to handle negative starting numbers correctly.

How accurate are online conversion calculators?

Quality conversion calculators are 99.99% accurate—they use exact conversion factors defined by international standards (NIST, SI units). Errors come from: rounding (we calculate to 6-10 decimal places), input mistakes, or outdated conversion factors. For critical applications (medical, engineering, legal), verify with multiple sources. Our calculators use official conversion factors updated annually and show full precision. For everyday use (cooking, DIY), accuracy is more than sufficient.

How do I convert between metric and imperial?

Key conversions: Distance: 1 inch = 2.54 cm (exact), 1 meter = 39.37 inches. Weight: 1 kg = 2.2046 lbs, 1 oz = 28.35 g. Volume: 1 L = 33.814 fl oz, 1 gallon = 3.785 L. Tip: Learn approximate mental math: 1 kg ≈ 2.2 lbs, 1 m ≈ 3.3 feet, 1 L ≈ 1 quart (close enough). For construction: 1 inch = 25mm (close enough). For precision work, use our conversion calculator with exact factors.

What's the formula for percentage of a number?

To find X% of a number: (X / 100) × Number. Examples: 20% of 150 = (20/100) × 150 = 30. 75% of 80 = (75/100) × 80 = 60. Shortcut: Move decimal two places left, then multiply. 15% = 0.15, so 15% of 200 = 0.15 × 200 = 30. For tips: 20% = divide by 5, 15% = divide by 10 then add half, 10% = move decimal left once. Our percentage calculator handles all variations instantly.

How do I calculate ratios and proportions?

Ratio compares two quantities (3:2 means 3 units of A per 2 units of B). Proportion states two ratios are equal (3:2 = 9:6). To solve proportions: cross-multiply. Example: If 3 items cost $15, how much for 7 items? Set up: 3/15 = 7/x. Cross-multiply: 3x = 105, x = $35. Used in: recipe scaling, mixture problems, map scales, gear ratios. Our ratio calculator handles scaling up/down and finds missing values in proportions.

When should I use different measurement units?

Choose units based on context: Tiny measurements: millimeters (screws, electronics). Small: centimeters/inches (books, phones). Medium: meters/feet (room dimensions, height). Large: kilometers/miles (travel distance). Weight: grams (food, jewelry), pounds (body weight, groceries), tons (vehicles, cargo). Volume: milliliters (medicine), cups (cooking), liters (beverages), gallons (fuel). Use same units in calculations—don't mix inches and centimeters. Convert everything to one system first for accuracy.

Understanding Math & Conversions

Math and conversion calculations are fundamental tools used in education, science, engineering, finance, and everyday life. Our calculators help you perform these operations quickly and accurately.

Why Use Math & Conversion Calculators?

Math and conversion calculators provide quick, accurate solutions for complex calculations. They help you:

  • Perform percentage calculations for discounts, taxes, and grades
  • Convert between different units of measurement
  • Solve mathematical equations and formulas
  • Avoid calculation errors in important decisions
  • Save time on repetitive mathematical operations

Key Math & Conversion Concepts

Understanding fundamental math and conversion concepts empowers you to solve problems efficiently:

  • Percentages - Expressing parts of a whole as fractions of 100
  • Unit Conversions - Translating measurements between different systems
  • Ratios & Proportions - Comparing quantities and maintaining relationships
  • Basic Algebra - Solving equations with unknown variables
  • Geometry - Calculating areas, volumes, and spatial relationships

Tips for Math Success

Follow these principles to improve your mathematical skills:

  • Practice regularly to build fluency and confidence
  • Use real-world examples to understand abstract concepts
  • Break complex problems into smaller, manageable steps
  • Double-check calculations, especially for important decisions
  • Use technology tools like calculators to verify manual work