How to use the wood weight calculator
- Measure actual dimensions in millimeters.
- Enter quantity and a density appropriate to the species, product, and current moisture content.
- Read total mass and per-piece mass. Use the material supplier’s data where available.
The formula
Mass (kg) = length × width × thickness (mm) × quantity ÷ 1,000,000,000 × density (kg/m³)
Worked example
Four boards measuring 2400 × 200 × 25 mm have a volume of 0.048 m³. At 650 kg/m³, their estimated mass is 31.2 kg.
Before you measure and cut
Density varies with species and moisture. Wet lumber can weigh substantially more than a dry sample of the same dimensions.
Voids, hardware, coatings, and packaging are excluded. This is a material estimate, not a rated lifting capacity.
Frequently asked questions
Why is there no exact weight for a wood species?
Species averages do not capture moisture, growth variation, or manufactured products. A measured density or product data sheet is more useful for a specific job.
Can I calculate plywood weight?
Yes, if you use the density of that panel product. The separate plywood weight tool accepts sheet sizes directly.
Reference
USDA Forest Products Laboratory: Wood Handbook. Material properties and setup conventions depend on the specific product.