Stefan-Boltzmann Law Calculator
Calculate the power radiated by a thermal body using the Stefan-Boltzmann law.
1 = ideal blackbody
Results
Total Radiated Power: 3.8489e+26 W
Power Density: 6.3201e+7 W/m²
Stefan-Boltzmann Law
P = εσAT⁴
Net radiation: P = εσA(T⁴ - T₀⁴)
σ = 5.670374419 × 10⁻⁸ W/(m²·K⁴)
ε = emissivity (0 to 1)
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: University Physics
by Young & Freedman
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.