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Planck Blackbody Peak Temperature (Wien Inverse) Calculator

T = b / λ_peak — temperature from peak emission wavelength.

Calculates blackbody temperature from the wavelength of peak spectral emission using Wien's displacement law (inverse form): T = b / λ_max.

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Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

T = b / λ_peak; b = 2.898 × 10⁻³ m·K

In depth

Calculates blackbody temperature from the wavelength of peak spectral emission using Wien's displacement law (inverse form): T = b / λ_max.