En Thermal Diffusivity Calculator is a practical engineering tool for calculating how quickly heat spreads through a material. Using thermal conductivity, density, and specific heat capacity, it calculates thermal diffusivity based on the formula α = k/(ρ × cp). The calculator supports multiple engineering units and automatically converts input values for accurate results. It is useful for heat transfer analysis, material selection, thermal engineering, HVAC applications, manufacturing, and research. Simply enter the required material properties to quickly determine thermal diffusivity.

Material Properties

Enter a positive material conductivity.
Enter the material density.
Enter the material heat capacity.

Typical Thermal Diffusivity Values

Approximate reference values at common reference conditions. These values are not used automatically in the calculation.

Aire
2.2 × 10−5 m²/s
Water
1.4 × 10−7 m²/s
Concrete
7.0 × 10−7 m²/s
Glass
8.0 × 10−7 m²/s
Acero inoxidable
4.0 × 10−6 m²/s
Carbon Steel
1.2 × 10−5 m²/s
Aluminum
9.7 × 10−5 m²/s
Copper
1.1 × 10−4 m²/s

Actual thermal properties vary with temperature, composition, density, moisture content, and material condition.