Every warm object glows, and Wien displacement law tells you which color it glows brightest at from its temperature alone. The peak wavelength equals a fixed constant, about two point eight nine eight millimeter kelvin, divided by the temperature in kelvin, so hotter objects peak at shorter, bluer wavelengths. That is why a red giant looks cool at around three thousand kelvin while a blue supergiant blazes past twenty thousand. This calculator returns the peak wavelength in nanometers along with the part of the spectrum it lands in, from infrared through visible to ultraviolet. Enter a temperature to see the dominant color of any star or heated body. Everything is computed locally in your browser.
Every warm object glows, and Wien displacement law tells you which color it glows brightest at from its temperature alone. The peak wavelength equals a fixed constant, about two point eight nine eight millimeter kelvin, divided by the temperature in kelvin, so hotter objects peak at shorter, bluer wavelengths.
Yes. Wien Law Peak Wavelength Calculator is completely free, with no sign-up and no usage limits.
Yes. Wien Law Peak Wavelength Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Wien Law Peak Wavelength Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.