Wien's Law (Peak Wavelength) Calculator
Calculate the peak wavelength emitted by an object from its temperature.
K
Result
501,5182 nm
Peak wavelength: 501.5182 nm
Result in all units
Step-by-step solution
λmax = b / T
What Is Wien's Law?
Wien's law gives the inverse relationship between the wavelength at which a radiating body emits most strongly and its temperature. It is used to estimate temperature from a star's color.
How is it calculated?
How Is It Calculated?
λ_max = b ÷ T
b = 2.898×10⁻³ m·K (Wien's constant).
- Enter the object's temperature.
Frequently Asked Questions
Why are blue stars hotter?
As temperature rises, the most strongly emitted wavelength shortens; that is why hot stars appear blue and cool stars appear red.