What is the density of common wood species?

Wood density varies by species and moisture content. At 12% moisture content (kiln-dried): pine averages 530 kg/m³, spruce 450 kg/m³, cedar 380 kg/m³, oak 700 kg/m³, maple 705 kg/m³, walnut 640 kg/m³, cherry 580 kg/m³, birch 670 kg/m³, ash 670 kg/m³, and teak 630 kg/m³. Engineered panels: plywood 540 kg/m³ and MDF 740 kg/m³.

How is wood plate weight calculated?

The formula is: Weight (kg) = Length (m) x Width (m) x Thickness (m) x Density (kg/m³). All dimensions are converted to meters before the calculation, giving a volume in m³, which is multiplied by the species density.

Why does wood density matter for weight calculations?

Wood density varies by up to 2x between species — a walnut board can weigh nearly twice as much as an equivalent cedar board. Using the correct species density is essential for accurate structural, freight, and load calculations.

Does moisture content affect wood weight?

Yes. Green (freshly cut) lumber can be 50–100% heavier than kiln-dried lumber. The densities in this calculator correspond to air-dried or kiln-dried wood at approximately 12% equilibrium moisture content, which is the standard for most construction and furniture-grade lumber.

How does plywood weight compare to solid wood?

Standard softwood plywood has a density of about 540 kg/m³, which is similar to pine but varies by face veneer species and number of plies. MDF (Medium Density Fiberboard) is denser at around 740 kg/m³ — heavier than most solid softwoods but comparable to some hardwoods.

Can I use this for decking boards and framing lumber?

Yes. Select the appropriate species (e.g., pine or spruce for framing, cedar or teak for decking) and enter the board dimensions. Use the Quantity field for multiple boards. Results reflect kiln-dried weight, which is the standard for structural calculations per building codes.

Does this calculator support imperial units like feet and inches?

Yes. Length and width can be entered in inches or feet, and thickness in inches. The calculator converts all values to meters internally before applying the density formula.

Wood Plate Weight Calculator

Name: Wood Plate Weight Calculator
Availability: InStock
Author: Nham Vu

Enter the length, width, and thickness of a wood plate, pick your species, and get the weight in kg and lbs instantly.

Plate Dimensions

Length

Width

Thickness

Wood Species / Panel Type

Quantity (boards)

Formula Reference

Weight (kg) = L (m) × W (m) × T (m) × ρ (kg/m³)

L = length, W = width, T = thickness, ρ = species density. Densities are for kiln-dried wood at approximately 12% moisture content. Green lumber can weigh 50–100% more.

Enter plate dimensions on the left and click Calculate.

Wood Species Densities (kiln-dried, 12% MC)

Species / Panel	Type	kg/m³	lb/ft³
Western Red Cedar	Softwood	380	23.7
Spruce	Softwood	450	28.1
Douglas Fir	Softwood	450	28.1
Pine — Scots	Softwood	510	31.8
Pine — Southern Yellow	Softwood	530	33.1
Cherry	Hardwood	580	36.2
Walnut	Hardwood	640	40.0
Teak	Hardwood	630	39.3
Oak	Hardwood	700	43.7
Maple — Hard	Hardwood	705	44.0
Plywood — Softwood	Engineered	540	33.7
Plywood — Hardwood	Engineered	680	42.5
MDF — Standard	Engineered	740	46.2
OSB	Engineered	800	49.9

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Summary

Enter the length, width, and thickness of a wood plate, pick your species, and get the weight in kg and lbs instantly.

How it works

Enter the plate length in your preferred unit (mm, cm, m, inches, or feet).
Enter the plate width in the same or a different unit.
Enter the plate thickness — commonly in mm or inches for lumber and panels.
Select the wood species or panel type; the standard density is applied automatically.
Optionally enter a quantity to calculate total weight for multiple boards.
Click Calculate Weight to see the result in kilograms and pounds with a full breakdown.

Use cases

Estimating lumber weight for structural engineering and load calculations.
Calculating freight and shipping costs for bulk wood panel orders.
Planning the dead load contribution of hardwood flooring or decking boards.
Comparing species or panel types (e.g., pine vs. oak vs. MDF) by weight.
Preparing bills of materials for furniture manufacturing and woodworking projects.
Sizing lifting equipment and trolleys for moving large sheet goods.
Estimating raw material weight for procurement and warehouse management.
Checking tabletop or shelf load capacity before specifying a wood species.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu