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Reference Library

Timber Reference Data

Authoritative, sortable reference tables built from real species data — density, hardness, moisture behaviour and thermal modification. Free for the whole wood industry.

Wood Density Database

Specific gravity and kg/m³ for all 60 species, sortable lightest to heaviest.
60 species

Janka Hardness Database

Janka ratings in lbf and newtons, ranked softest to hardest.
60 species

Strength Properties (MOE & MOR)

Modulus of elasticity and rupture — stiffness and bending strength for beam and post design.
60 species

Durability & Fire

EN 350 natural durability class and indicative ASTM E84 fire performance for every species.
60 species

Thermal Conductivity

Heat-conduction k values (USDA formula) — how well each wood insulates, lightest to densest.
60 species

Moisture Content Reference

Green MC, fiber saturation, shrinkage and T/R ratio for every species.
60 species

Thermowood Species Database

Base woods for thermal modification with class, mass loss and durability.
10 base woods
Looking for a specific species? The Species Database has a full profile page for each of the 60 woods, combining all of this data with descriptions and the tools that use it.