Firewood Calculator
Calculate stacked firewood volume, full cords, face-cord equivalents, cubic meters, and optional estimated cost from your woodpile dimensions.
Calculate Firewood
Firewood Estimate
Full Cords = (Length × Height × Depth) ÷ 128 ft³
What Is a Firewood Calculator?
A Firewood Calculator estimates how much stacked firewood you have based on the length, height, and depth of the pile. The result is useful for comparing a stack with a standard full cord of firewood.
In the United States, a full cord is a stacked volume of 128 cubic feet, commonly visualized as a pile measuring 8 feet long, 4 feet high, and 4 feet deep.
Stacked Volume
Find the total cubic feet occupied by the measured wood stack.
Full Cords
Convert stacked volume into the standard 128-cubic-foot cord measurement.
Cost Estimate
Optionally estimate firewood value using a price per full cord.
How the Firewood Calculator Works
Measure the rectangular space occupied by your stacked firewood. The calculator converts the selected units to feet, multiplies the three dimensions, and divides the resulting cubic feet by 128.
- Measure the stack length.
- Measure the stack height.
- Measure the stack depth or average log length.
- Select the correct measurement units.
- Optionally enter a price per full cord.
- Click Calculate Firewood.
Firewood Calculation Formulas
Volume = Length × Height × Depth
Cords = Stacked Cubic Feet ÷ 128
Face Cords ≈ Stacked Cubic Feet ÷ 42.67
The face-cord estimate assumes a nominal stack depth of 16 inches. Because terms such as “face cord” can vary by region, use the actual stack dimensions when buying or selling firewood.
Firewood Calculation Example
Suppose a stack measures 8 feet long, 4 feet high, and 16 inches deep. Converting the depth to feet gives approximately 1.333 feet.
The stack occupies about 42.67 cubic feet. Dividing that by 128 gives approximately 0.33 of a full cord, which is also close to one 16-inch-deep face cord.
Common Firewood Volume References
| Measurement | Approximate Stacked Volume | Notes |
|---|---|---|
| Full Cord | 128 ft³ | Standard stacked cord volume. |
| Half Cord | 64 ft³ | One-half of a standard full cord. |
| Quarter Cord | 32 ft³ | One-quarter of a standard full cord. |
| 16-inch Face Cord | About 42.67 ft³ | Assumes an 8 ft × 4 ft face and 16-inch depth. |
Tips for Measuring Firewood
- Measure wood after it has been stacked as neatly as practical.
- Use the average stack depth if log lengths vary.
- Measure multiple sections separately if the pile is irregular.
- Do not confuse stacked volume with the solid wood volume inside the logs.
- Confirm local firewood measurement terminology before purchasing.
Firewood Calculator FAQs
How many cubic feet are in a full cord of firewood?
A standard full cord of stacked firewood occupies 128 cubic feet.
What dimensions make one full cord?
Any neatly stacked dimensions totaling 128 cubic feet equal one full cord. A common example is 8 feet long by 4 feet high by 4 feet deep.
What is a face cord?
A face cord usually describes a stack with an 8-foot by 4-foot face and a depth equal to the log length. Because log length can vary, its exact volume can vary too.
Can I use meters in this calculator?
Yes. You can enter the stack length, height, and depth in feet, meters, or inches. The calculator automatically converts measurements before calculating volume.
Can the calculator estimate firewood cost?
Yes. Enter an optional price per full cord and the calculator will multiply it by the estimated number of full cords.
Is this the same as solid wood volume?
No. A cord is based on stacked volume, which includes the air spaces between logs. It is not a measurement of solid wood fiber alone.