ONE FORMULA, ONE ANSWER
Thermal Diffusivity Calculator
Calculate thermal diffusivity from conductivity and volumetric heat capacity. Choose input units and calculate one value within the stated conditions.
Inputs
Calculations run in this browser. Scientific notation such as 1.2e-3 is supported. Do not group thousands.
Result
Thermal diffusivity α
Enter values and select Calculate.
α = k/(ρc_p)
Assumptions
Required: k,ρ,c_p>0 for the same isotropic medium state. Phase change, temperature-dependent integration and automatic multilayer homogenization are excluded.
Displayed values are floating-point approximations. Design safety factors and unprovided error contributions are not calculated.
Formula references and credits
NaNa Lab created the code, descriptions, icons and preview images. Text, figures and code from the linked references have not been reproduced.
Physical constants: NIST / CODATA 2022. The values of μ₀ and ε₀ are measured recommendations, not exact defining constants. Values and precision notes are in the source record.
This site includes Google advertising and analytics, and Cloudflare analytics.