Star Luminosity Calculator
Estimate stellar luminosity from radius and temperature.
CalcSimpler Examples
- R=6.96e8 m, T=5778 K ⇒ 3.85e26 W
- R=1e8 m, T=3000 K ⇒ 5.77e23 W
FAQ
What constant is used?
The calculation uses the Stefan–Boltzmann constant 5.670374419×10⁻⁸.
Are inputs in SI units?
Yes, radius in meters and temperature in Kelvin.
Does it assume a perfect blackbody?
Yes, real stars may differ slightly.
Additional Information
- Luminosity is total energy output per second.
- Useful for comparing star brightness.
CalcSimpler