Kalkulator Isipadu Balak Kayu
Calculate log volume and board feet using Doyle, Scribner, and International rules.
Log Calculator
Enter log dimensions to estimate board foot yield
Measure inside bark
Optional - for taper calculation
Scaling Note: Measurements should be taken inside the bark at the small end. Log rules account for sawing waste and taper.
Doyle Rule
Formula: ((D-4)²/16) × L. Most conservative, favors buyers. Best for logs 12-28" diameter. Common in eastern US.
Scribner Rule
Based on diagram method. Moderate estimate. Most widely used lumber rule in the US, especially Pacific Northwest.
International 1/4"
Most accurate for all sizes. Accounts for 1/4" kerf. Favored for hardwoods and government timber sales.
Soalan Lazim
Which log rule should I use?
Why do different rules give different results?
How accurate are log scale estimates?
Kalkulator Khusus
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