Log Weight Calculator

Logs vary significantly in weight depending on their size and wood species — a hickory log can weigh more than twice as much as a cedar log of the same dimensions. Enter your log's small end diameter, large end diameter, length, and number of logs, then select your wood species in the Log Weight Calculator to get the total weight in pounds. Secondary outputs include weight per log, volume in cubic feet, and average diameter.

inches

Measure diameter at the small end, excluding bark bumps

inches

Measure diameter at the large end, excluding bark bumps

feet

Results

Total Weight

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Weight Per Log

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Volume

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Average Diameter

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Frequently Asked Questions

How much does a log weigh?

Log weight depends on the wood species, moisture content, and volume. Fresh-cut (green) logs typically weigh 25-50 lbs per cubic foot depending on species. For example, a 12-inch diameter, 8-foot oak log weighs approximately 280-320 lbs.

What is green weight and why does it matter?

Green weight refers to the weight of freshly cut wood with high moisture content (typically 50-150% moisture). This is important for crane operations, transportation planning, and safety calculations in tree removal and logging operations.

How do I measure the diameter of a log correctly?

Measure the diameter at both ends excluding bark irregularities and bumps. Use calipers or a diameter tape for accuracy. The calculator uses both measurements to account for the log's taper using Huber's formula.

Which wood species are heaviest when green?

Hickory is among the heaviest at ~51 lbs/ft³, followed by White Oak (~47 lbs/ft³) and Beech (~45 lbs/ft³). Lighter species include Cedar (~23 lbs/ft³), White Pine (~25 lbs/ft³), and Basswood (~26 lbs/ft³).

How much weight can a pickup truck safely carry?

Most pickup trucks can safely carry 1,500-2,000 lbs in the bed. This equals roughly 2-3 medium oak logs (12-16 inch diameter, 8 feet long). Always check your vehicle's payload capacity and local weight regulations.

Why do I need to know log weight for tree work?

ANSI Z133-2017 requires tree crews to have access to green log weight charts for safety. Knowing weight is essential for crane capacity planning, rigging calculations, and preventing equipment overload during tree removal operations.

How accurate is this calculator compared to actual weight?

This calculator provides estimates based on average green densities and standard formulas. Actual weight can vary ±10-15% due to moisture content variations, wood density differences within species, and measurement accuracy.

What formula does this calculator use?

The calculator uses Huber's formula for volume calculation: V = π × (average diameter/24)² × length. Weight is then calculated by multiplying volume by the species-specific green density.