Wood Weight Calculator
Estimate lumber weight from dimensions, wood species, and moisture content.
Results update instantly as you type.
Weight Comparison
Relative weight comparison of your wood selection.
How Do You Calculate the Weight of Wood?
To calculate wood weight, multiply the volume of the board (in cubic inches) by the density of the wood species (in pounds per cubic inch), then adjust for moisture content.
Weight = Volume (in³) × Density (lb/in³) × (1 + Moisture% / 100)
What Is the Density of Common Wood Species?
| Wood Species | Type | Density (lb/ft³) | Weight per BF (lbs) |
|---|---|---|---|
| Red Oak | Hardwood | 44 | 3.08–3.58 |
| White Oak | Hardwood | 47 | 3.42–3.92 |
| Hard Maple | Hardwood | 45 | 3.25–3.75 |
| Black Walnut | Hardwood | 39 | 2.50–3.17 |
| Cherry | Hardwood | 40 | 2.75–3.17 |
| Douglas Fir | Softwood | 38 | 2.42–2.83 |
| Eastern White Pine | Softwood | 30 | 1.67–2.08 |
| Hickory | Hardwood | 55 | 4.17–4.67 |
Frequently Asked Questions
How much does a board foot of oak weigh?
A board foot of red oak weighs about 3.08–3.58 lbs (1.40–1.62 kg) at 8% moisture content. White oak weighs slightly more at 3.42–3.92 lbs (1.55–1.78 kg) per board foot.
Does moisture content affect wood weight?
Yes, significantly. Green (freshly cut) wood can weigh 50–100% more than kiln-dried wood. For example, green red oak weighs about 65 lb/ft³ vs 44 lb/ft³ when kiln-dried to 8%.
What is the heaviest common wood?
Hickory is the heaviest common domestic wood at 55 lb/ft³. Among exotic woods, lignum vitae (80 lb/ft³) and ipe (69 lb/ft³) are even heavier. The lightest common wood is balsa at 9 lb/ft³.
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