Wood Hardness and Weight Calculator

Wood Hardness & Weight Calculator

Look up Janka hardness ratings (kN) and estimate the weight of your woodworking project

Wood Species	Category	Janka (kN)	Hardness	Density (kg/m³)	Origin

Soft (0-4.4 kN)

Medium (4.4-8.9 kN)

Hard (8.9+ kN)

What is the Janka Hardness Test?

The Janka hardness test measures the force required to embed a 0.444-inch steel ball halfway into a piece of wood. Results are given in kilonewtons (kN). Higher numbers indicate harder wood.

Why Does Hardness Matter?

Hardness affects durability, workability, and suitability for different projects. Harder woods resist dents better for flooring, while softer woods are easier to carve and work by hand.

About Density

Wood density (kg/m³) indicates how heavy the wood is. Denser woods are generally stronger but heavier. This directly affects the weight of your finished project.

1. Select Wood Type

Select a wood from the dropdown below or go to the Database tab to browse

Choose Wood Species

2. Enter Dimensions

Length

Width

Height / Thickness

Estimated Weight

Approximate Weight

0 kg

(0 g)

Volume: 0 cm³ (0 m³)

Note

Weight estimates are based on average wood densities and assume solid pieces. Actual weight may vary based on moisture content, grain variations, and natural differences between samples.