Healthy Weight Calculator - Calculate Your Ideal Body Weight
Calculate your healthy weight range using BMI and ideal body weight using multiple medical formulas including Devine, Robinson, Miller, and Hamwi
Healthy Weight Calculator
Your Healthy Weight Results
What is a Healthy Weight Calculator?
A Healthy Weight Calculator determines your ideal body weight range using multiple medical formulas including Devine, Robinson, Miller, and Hamwi. It also calculates healthy weight range based on BMI 18.5-24.9 for optimal health outcomes.
This calculator helps you:
- Find your healthy weight range based on height
- Calculate ideal weight using multiple validated formulas
- Set realistic weight loss or gain targets
- Determine optimal weight for your frame size
- Understand if current weight is within healthy range
For calculating your current BMI to assess weight status, use our BMI Calculator to determine if you're underweight, normal, overweight, or obese.
To calculate daily calories needed to reach your target weight, try our Calorie Calculator for personalized nutrition planning and weight management.
For determining lean body mass and muscle content, use our Lean Body Mass Calculator to understand body composition beyond just weight.
To calculate calorie deficit for reaching healthy weight, try our Calorie Deficit Calculator for safe and sustainable weight loss planning.
How Healthy Weight Calculator Works
The calculator uses four validated formulas:
Women: 45.5kg + 2.3kg per inch over 5 feet
Women: 49kg + 1.7kg per inch over 5 feet
Women: 53.1kg + 1.36kg per inch over 5 feet
Women: 45.5kg + 2.2kg per inch over 5 feet
Healthy weight range is calculated using BMI 18.5-24.9 applied to your height. Frame size adjustments: small frame -10%, large frame +10% to ideal weight.
Understanding Ideal Weight Formulas
Devine Formula
Most widely used in medical practice for medication dosing. Developed in 1974, validated for average-framed individuals. Slightly conservative for taller heights.
Robinson Formula
Modified Devine formula from 1983 with different coefficients. Tends to give slightly higher weights. Good for people with larger frames or more muscle mass.
Miller Formula
Also from 1983, provides estimates between Devine and Robinson. Well-validated modern formula. Often produces most moderate weight recommendations.
Hamwi Formula
Traditional formula from 1964, still used clinically. Quick estimation method. Provides reasonable targets for nutrition planning and clinical assessments.
How to Use This Healthy Weight Calculator
Select Gender
Choose male or female for accurate formula calculation
Enter Height
Input your height in feet/inches or centimeters
Choose Frame Size
Select small, medium, or large frame for adjustment
View Weight Ranges
See healthy range and ideal weights from all formulas
Benefits of Knowing Healthy Weight
- • Realistic Goal Setting: Set achievable weight targets based on scientifically validated formulas and healthy ranges.
- • Health Risk Reduction: Maintaining healthy weight reduces risks of diabetes, heart disease, and other chronic conditions.
- • Personalized Targets: Multiple formulas account for individual variations in height, gender, and frame size.
- • Medical Communication: Discuss evidence-based weight goals with healthcare providers using standard formulas.
- • Progress Tracking: Monitor how current weight compares to healthy and ideal ranges over time.
- • Nutrition Planning: Calculate appropriate calorie and macronutrient targets based on ideal weight goals.
Factors Affecting Ideal Weight
1. Frame Size
Bone structure significantly impacts ideal weight. Large-framed individuals can healthily weigh 10% more than formulas suggest, while small frames may target 10% less.
2. Muscle Mass
Athletes and bodybuilders often exceed ideal weight formulas due to muscle mass. LBM and body fat percentage matter more than weight alone for muscular individuals.
3. Age
Ideal weight may increase slightly with age as body composition changes. Older adults benefit from slightly higher BMI (23-27) for health resilience.
4. Ethnicity
Asian populations have different BMI cutoffs (healthy: 18.5-23) due to higher body fat at lower BMI. Ethnicity affects body composition and health risk profiles.
5. Health Conditions
Medical conditions like PCOS, thyroid disorders, or medications can affect achievable healthy weight. Consult healthcare providers for personalized targets.
Frequently Asked Questions (FAQ)
Q: What is a healthy weight for my height?
A: Healthy weight is determined by BMI range 18.5-24.9. For example, a 5'9\" person should weigh 125-169 lbs. Multiple formulas (Devine, Robinson, Miller, Hamwi) provide ideal weight estimates based on height and frame size.
Q: How do I calculate my ideal body weight?
A: Ideal body weight is calculated using formulas like Devine, Robinson, Miller, or Hamwi based on height and gender. These medical formulas estimate optimal weight for health, though individual factors like muscle mass and frame size also matter.
Q: Which ideal weight formula is most accurate?
A: The Devine formula is most commonly used medically and works well for average frames. Robinson is slightly more generous, Miller is newer and validated, while Hamwi is traditional. Using multiple formulas gives a realistic target range.
Q: Does frame size affect ideal weight?
A: Yes, frame size significantly impacts ideal weight. Small-framed individuals should target the lower end of healthy ranges, medium frames the middle, and large frames the upper end. Wrist circumference helps determine frame size.
Q: Is BMI the same as ideal weight?
A: No, BMI provides a healthy weight range (18.5-24.9), while ideal weight formulas estimate a specific target within that range. Ideal weight formulas account for height and gender more precisely than BMI alone.