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Firewood cord calculator

Measure your stacked wood. See its volume in full cords, cubic feet and cubic meters.

Your stack dimensions

Use the selected unit for all three dimensions. Changing units reinterprets your entries; it does not convert them.

Enter positive numbers, such as 8 or 1.5. Measure the whole stack, including its depth from front to back.

Stacked volume

Enter three dimensions to see your result.

Full cords
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Cubic feet (ft³)
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Cubic meters (m³)
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A full cord is 128 cubic feet of stacked wood, including air gaps. Source: USU Extension.

Volume only. This result does not determine splitter tonnage, wood weight, moisture, heat output or seasoning time.

How to measure your stack

  1. Arrange the wood in an even stack before measuring.
  2. Measure its length along the front, its height, and its depth from front to back. Use the same unit throughout.
  3. For separate rectangular stacks, calculate each one and add the volumes. An uneven pile gives only an estimate from its outer dimensions.

The calculation uses the stack’s outside volume, including the spaces between pieces. It does not subtract air gaps. See USU Extension’s explanation of firewood volume.

The full-cord formula

Full cords = length × height × depth (in feet) ÷ 128

An 8 ft × 4 ft × 4 ft stack has a volume of 128 ft³, or 1 full cord. Inches are divided by 12 before multiplication; meters are divided by 0.3048. One full cord is approximately 3.625 m³. Results are rounded for display.

Is a face cord the same as a full cord?

No. “Face cord” is not a standard fixed volume: depth matters. USU Extension describes a face cord as 8 feet long and 4 feet high, with variable piece length.

For example, an 8 ft × 4 ft stack that is exactly 16 inches deep is 42⅔ ft³, or one-third of a full cord. In inches, enter 96 × 48 × 16. That fraction applies to this example, not every face cord.

What about loose or thrown wood?

This tool does not convert a loose pile or truckload to stacked cords. Random loading changes the air space, so there is no exact loose-to-stacked equivalent here. Stack the wood before using these measurements. Read the stacking distinction at USU Extension.

Stack volume describes the amount of wood. Choosing equipment also requires the dimensions of individual logs and the machine’s documented limits.

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