Blackbody Radiation Calculator
Calculate Wien peak wavelength and Stefan-Boltzmann radiation power.
Blackbody Radiation Calculator estimates peak wavelength and emitted power from temperature using ideal thermal-radiation laws. A blackbody is an ideal emitter and absorber whose spectrum depends only on temperature. Wien's displacement law states that hotter objects emit peak radiation at shorter wavelengths, which is why very hot objects shift from infrared toward visible light. The Stefan-Boltzmann law states that total emitted power rises with the fourth power of absolute temperature, so small temperature changes can produce large power changes. Emitting area scales total power, while real materials may emit less than an ideal blackbody because emissivity is below one. This calculator is useful for physics intuition, thermal design screening, and astronomy examples.