Physics & Engineering
Stefan-Boltzmann Law Calculator
Calculate the radiant power emitted by an object based on its temperature, area and emissivity.
Your inputs
Change any value to update the result instantly.
Radiated power
3,189.5856 W
Radiant flux (per m²)
3,189.586 W/m²
Temperature
500 K
Emissivity
0.9
Formula and working
P = εσAT⁴
- 1
Collect the inputs
Emissivity (ε) = 0.9; Surface area (A) = 1 m²; Temperature (T) = 500 K
- 2
Apply the formula
P = εσAT⁴
- 3
Result
Radiated power = 3,189.5856 W
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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