Cord Wood Calculator - Stack Volume and Cost Estimator

A cord wood calculator is a household planning tool that converts the length, width, and height of any stacked firewood pile into standard cord and face cord measurements. By translating everyday dimensions into the 128 cubic foot unit, the tool removes guesswork from delivery checks and price comparisons.

• • Verifying a Firewood Delivery: Check the stacked volume of a delivered load against the quoted cord amount before paying the driver.
• • Planning Winter Supply: Estimate how many full cords of wood your shed or porch can hold before the first cold snap.
• • Comparing Face Cord Pricing: Convert a face cord price into its full cord equivalent to compare sellers who use different units.
• • Budgeting Home Heating: Multiply the cord count by your local price per cord to size the seasonal firewood budget.

A full cord of wood is the amount of tightly stacked firewood that fills a 4 foot by 4 foot by 8 foot space, equal to 128 cubic feet of volume, the U.S. legal standard for firewood sales in most states.

A cord wood calculator lets you measure the outside dimensions of any pile with a tape measure and translate them into the cord, face cord, and dollar amounts a supplier would quote.

If you balance a wood stove against electric heat, pair this cord wood calculator with the Electricity Cost Calculator to size your combined household energy budget.

The calculation works by converting a rectangular volume of stacked firewood into the standard 128 cubic foot cord, then dividing the same volume by the face cord volume for the entered log depth in inches. Volume, dollars, and percentage of a full cord all follow from the same length times width times height starting point.

• Length, Width, Height (ft): Outside dimensions of the firewood pile in feet. Stack Length is the long side in the direction the logs lie, Stack Width is the side across the cut ends of the logs, and Stack Height is the vertical measurement. Defaults of 8 by 4 by 4 ft match a full cord.
• Log Depth (in): Average length of a single log in inches, set in a separate inches field. The default 16 in gives the 1/3 face cord ratio; 12 in gives a stove cord and 24 in gives a Sheldon cord.
• Price per Cord (USD): Local retail price of one full cord of firewood in U.S. dollars, used to estimate the dollar value of the stack.

Because the face cord count uses the log depth field, switching to 12 in or 24 in changes the face cord ratio. The cubic meter result uses the SI definition of volume published by NIST, so the conversion is reliable for metric-using countries.

According to U.S. Department of Energy, residential wood stove maintenance is commonly tracked in cords of firewood, with catalytic combustors typically inspected after every two cords of wood burned.

When you want to compare firewood cord cost against gasoline or propane, use the Fuel Consumption Calculator to translate the same dollars per unit across fuels.

A few standard definitions cover nearly every firewood conversation you will have with a dealer, a building inspector, or a neighbor.

Knowing the difference between a full cord and a face cord protects you from the most common firewood pricing trap. A 'cord' price that is actually a face cord price at 16 in logs is one third the wood for the same dollar, but only one quarter if the cut is 12 in.

Stack condition matters as much as the unit. A loose pile with visible air gaps can measure 20 to 30 percent less solid wood than the same outer dimensions tightly stacked.

For homeowners sizing a backup power plan around a wood stove, the Generator Wattage Calculator shows what your generator needs to run alongside the heating load.

Measure the outside of the firewood stack, enter the three dimensions in feet plus the log length in inches, and read the cord, face cord, and dollar results.

1. 1 Stack Length: Run a tape along the long side in the direction the logs lie. Enter the length in feet, defaulting to 8 ft for a full cord or face cord.
2. 2 Stack Width: Measure the side across the cut ends of the logs in feet, using 4 ft for a full cord or 1.33 ft (16 in) for a face cord.
3. 3 Stack Height: Measure the stack from the ground to the top, averaging the highest and lowest points if the pile leans.
4. 4 Log Depth: Enter the average length of a single log in inches in the separate field. Use 16 in for a standard face cord, 12 in for a stove cord, or 24 in for a Sheldon cord.
5. 5 Price per Cord: Type the retail price your seller quotes per full cord. The cost field multiplies the cord count by this price.
6. 6 Read the Results: Check the full cord count, face cord count at the entered log depth, percent of a full cord, and dollar value.

A homeowner measures a delivered load at 12 ft long, 4 ft wide, and 4 ft tall with 16 in logs at $250 per cord. The cord wood calculator returns 1.50 full cords, 4.50 face cords, 192 cubic feet, and an estimated $375, so the homeowner can confirm whether the delivery matches the cord amount on the invoice.

Using a cord wood calculator turns an awkward tape measure exercise into a quick check that protects both budget and storage planning.

• • Prevents Overpaying on Delivery: Catches short loads by comparing the actual stacked volume to the cord amount on the invoice.
• • Speeds Up Seasonal Planning: Translates shed or porch dimensions into the number of full cords of wood that can fit.
• • Standardizes Firewood Quotes: Converts face cord and stove cord prices into a single full cord number so two suppliers can be compared on equal terms.
• • Supports Heating Budgets: Multiplies the cord count by the local price per cord to size the seasonal firewood budget alongside electricity and propane costs.

A clear cord count is useful when you sell firewood. Documenting the stacked dimensions and the resulting cord number turns a friendly transaction into a transparent one both parties can verify later.

If you heat with wood alongside another fuel, the calculator pairs naturally with the household energy planning tools in the Everyday Life category, helping you decide whether to add insulation or upgrade a stove.

If you cool with central air and heat with wood, the AC Tonnage Calculator helps you balance seasonal load against the cord count you actually have on hand.

The cord number is exact for a rectangular stack, but a few real-world factors change how the result lines up with the firewood you actually burn.

• • This cord wood calculator assumes a rectangular stack with parallel sides. Irregular piles should be broken into smaller rectangles and summed.
• • The result reports stacked volume rather than solid wood volume. Real usable firewood per cord is typically 70 to 85 percent of the stacked volume.
• • The price per cord field assumes a single retail rate for the full stack. Delivery fees, stacking fees, and species surcharges are not included in the total cost figure.

Local prices per cord swing widely. Hardwood species, regional demand, and delivery distance can move the retail price of a full cord by hundreds of dollars. Pair the dollar value with a heat loss estimate, since a tighter house burns fewer cords each winter.

According to Consumer Reports, a full cord of seasoned hardwood typically costs between $200 and $400 in most U.S. regions, with prices rising in cold-winter markets where demand peaks each winter.

To translate cord of wood volume into real BTU output, combine the dollar value from this tool with the Heat Loss Calculator so you know how many full cords your house actually burns each winter.