Log Volume Calculator
Enter log diameter and length to calculate board-foot volume using Doyle, Scribner, or International 1/4-inch log rules.
Log Measurements
inches
Measure at the narrow (small) end, bark removed. Range: 6–60 in.
feet
Standard log lengths: 8, 10, 12, 16, 20 ft. Range: 8–40 ft.
Results
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Board Feet
—
Cubic Feet
Rule Comparison
| Log Rule | Board Feet | Cubic Feet |
|---|
Board-foot volumes vary by rule; cubic-foot volume is rule-independent.
Enter log dimensions and click Calculate
Summary
Enter log diameter and length to calculate board-foot volume using Doyle, Scribner, or International 1/4-inch log rules.
How it works
- Select the log rule you want to use (Doyle, Scribner, or International 1/4-inch).
- Enter the small-end diameter inside bark (DIB) in inches.
- Enter the log length in feet.
- Click Calculate to see board-foot volume, cubic-foot volume, and a per-rule comparison.
- Use the comparison table to view all three rules side-by-side for the same log.
Use cases
- Estimating timber value when buying or selling logs at a sawmill.
- Scaling logs in the field for accurate load tallies.
- Comparing log rules to understand yield differences between buyers and sellers.
- Teaching forestry students the mathematics behind board-foot log rules.
- Quick volume checks for timber cruising and harvest planning.
- Determining cubic-foot volume for pulpwood or biomass pricing.
Frequently Asked Questions
Last updated: 2026-07-01 ·
Reviewed by Nham Vu