Stefan Boltzmann Law Calculator
Find the power radiated per area by a blackbody.
The Stefan–Boltzmann law gives how much thermal radiation a hot surface emits.
The math behind it
j = ε·σ·T⁴, where σ = 5.67 × 10⁻⁸ W/(m²·K⁴) and ε is emissivity (1 for a blackbody).
Worked example
1000 K blackbody → about 56,700 W/m².
FAQ
Why T⁴?
Radiated power rises with the fourth power of temperature, so hot objects glow intensely.