Stefan-Boltzmann Calculator

Calculate thermal radiation power using the Stefan-Boltzmann law: P = epsilon * sigma * A * T^4.

m²
K

Radiated Power

56,704.00 W

Radiated Power (kW)56.7040 kW

Radiated Power vs Emissivity (0-1)

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Formule

## Stefan-Boltzmann Law Every object radiates thermal energy proportional to the fourth power of its temperature. ### Formula **P = epsilon * sigma * A * T^4** where sigma = 5.6704 x 10^-8 W/(m²·K^4) is the Stefan-Boltzmann constant and epsilon is the emissivity (1 for a perfect black body).

Exemple Résolu

A perfect black body (epsilon=1) at 1000 K with 1 m² surface area.

  1. 01P = epsilon * sigma * A * T^4
  2. 02P = 1 * 5.6704e-8 * 1 * 1000^4
  3. 03P = 5.6704e-8 * 1e12
  4. 04P = 56,704 W = 56.7 kW