Lumber Volume Calculator — m, cm to m³, dm³, cost
How to use this calculator
Enter lumber dimensions — thickness, width, and length — in your preferred metric unit (m, cm, or mm). Use Single Piece mode for one board, Multiple Pieces for a cut list, or Common Lumber for preset European structural timber sizes (38×89, 45×145, etc.) per EN 336.
Formula: Volume (m³) = Thickness (m) × Width (m) × Length (m). Results are shown in both cubic meters and cubic decimeters (1 m³ = 1000 dm³).
Saved Calculations
| Time | Mode | Size | Length | Qty | m³ | Cost |
|---|
How to Calculate Lumber Volume in Metric
This calculator computes lumber volume in cubic meters (m³) and cubic decimeters (dm³) from metric dimensions. Enter thickness and width in millimeters or centimeters, length in meters, and get instant volume results. The formula is: Volume = Thickness × Width × Length (all in meters).
European Structural Timber Sizes (EN 336)
European timber follows EN 336 standard dimensions. Common structural sizes include 38×89 mm (equivalent to a 2×4), 45×145 mm, 45×195 mm, and posts from 70×70 to 120×120 mm. Strength classes C16 and C24 are the most common for residential construction per EN 14081.
Weight Estimation
Weight is estimated at approximately 500 kg/m³ for kiln-dried softwood (spruce, pine). Hardwoods such as oak may weigh 650-750 kg/m³, while lighter species like cedar are around 350 kg/m³.
