Firewood Calculator
Measure your stack and enter its length, height and depth to find out how many cords of firewood you have — the standard way wood is sold.
A full cord is a stack measuring 4 ft high × 8 ft long × 4 ft deep — 128 cubic feet of tightly stacked wood. This calculator converts any stack size into cords so you can check you got what you paid for.
How to calculate cords of firewood
Multiply the three stack dimensions to get the volume, then divide by 128 cubic feet (the size of one full cord).
Volume = Length × Height × Depth
Cords = Volume ÷ 128 cubic feet
Cords = Volume ÷ 128 cubic feet
| Measure | Size |
|---|---|
| Full cord | 128 cu ft (4 × 8 × 4 ft) |
| Face cord (16 in logs) | ≈ 1/3 of a full cord |
| Rick / rack | Varies — usually a face cord |
Worked example
A stack 8 ft long, 4 ft high, 4 ft deep:
| Volume = 8 × 4 × 4 | 128 cu ft |
| Cords = 128 ÷ 128 | 1 full cord |
Feet or metres?
Switch to metric to measure in metres; results are shown in cords and cubic metres (one cord ≈ 3.62 m³).
Frequently asked questions
How big is a cord of firewood?
A full cord is 128 cubic feet — a stack 4 feet high, 8 feet long and 4 feet deep of tightly packed wood.
What's a face cord?
A face cord is 4 ft high × 8 ft long but only as deep as the logs are long. With 16-inch logs, that's about one-third of a full cord.
How do I know if I got a full cord?
Stack the wood neatly, measure length × height × depth in feet, and divide by 128. If it's well under 1, you're short.
Related calculators
Assumes neatly stacked wood. Loose or "thrown" piles contain less solid wood than the same volume stacked.