Log Weight Calculator
Use this log weight calculator to estimate the volume and weight of a round log using Huber's formula. Enter the log length, the center diameter, the wood density, and the number of logs to get a practical planning estimate for hauling, milling, or lifting. It is handy when you want a fast weight check before you move timber or price transport.
Result
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What This Log Weight Calculator Helps You Do
Use this log weight calculator to estimate the volume and weight of a round log using Huber's formula. Enter the log length, the center diameter, the wood density, and the number of logs to get a practical planning estimate for hauling, milling, or lifting. It is handy when you want a fast weight check before you move timber or price transport.
How to Calculate Log Weight Calculator
- Measure the log - Measure the log length and the diameter at the center or midpoint of the log.
- Choose density - Enter a wood density that matches the species and moisture content you are working with.
- Enter quantity - If you are stacking or hauling multiple logs, include the total count so the weight scales correctly.
- Check the estimate - Review the total volume and total weight before you plan transport, lifting, or milling.
Log Weight Calculator Formula
| Symbol | Definition | Unit |
|---|---|---|
| L | Log length | m |
| d | Center diameter | m |
| ρ | Wood density | kg/m3 |
| q | Quantity | logs |
Worked Examples
- length: 6
- diameter: 0.45
Result: Volume = 0.95 m3
A modest log gives you a quick check on cubic volume before transport. The estimate is 0.95 m3.
- length: 5
- diameter: 0.4
- density: 700
- quantity: 2
Result: Weight = 879.65 kg
Quantity matters because two similar logs can double the hauling load. The estimate is 879.65 kg.
- length: 4
- diameter: 0.35
Result: Volume = 0.38 m3
This is a handy benchmark when comparing different log lengths and diameters. The estimate is 0.38 m3.
- length: 8
- diameter: 0.5
- density: 600
- quantity: 3
Result: Weight = 2827.43 kg
Large logs add up quickly, so a weight check helps with truck and crane planning. The estimate is 2827.43 kg.
How to Interpret Your Results
| Range | Meaning | Action |
|---|---|---|
| < 0.5 m3 | Small log | Easy to move by hand or with light machinery, depending on moisture and bark. |
| 0.5–1.0 m3 | Medium log | Plan for mechanical handling if the log is wet or awkward to roll. |
| 1.0–2.5 m3 | Large log | Check lifting gear, loading points, and vehicle capacity. |
| > 2.5 m3 | Very large log | Treat as a heavy lift and verify equipment limits before moving it. |
Frequently Asked Questions
Sources
Last reviewed: March 2026