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PHYSICS / THERMAL RADIATION

Wien Displacement Law Calculator

Calculate ideal blackbody peak wavelength from absolute temperature. Inspect the SI equation, substituted inputs, derived result, and physical limitations in one guided workspace.

  • 01 Calculated in this tab
  • 02 Values stay in this browser tab
  • 03 Use boundary

Conversion input

Known value

Filter by unit name, symbol, or code. Your current selections remain available.

Preparing the calculator...

Use boundary

Calculation path

Calculate ideal blackbody peak wavelength from absolute temperature. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.

Calculation path

lambda_max=b/T

What you provide

What you provide

  • Blackbody temperature expressed in K, using the same scenario as the other inputs
  • The stated equation, unit convention, and modelling assumption must fit your intended use

What you receive

What you receive

  • Peak wavelength in nm from the stated equation
  • A symbolic formula plus substituted working with your values
  • Visible assumptions, field guidance, and an authoritative learning reference

Use boundary

Choose the maximum decimal places shown. This does not increase source accuracy.

The emitter is treated as an ideal blackbody; real spectra can have emissivity and line features.

Use internally consistent units and retain extra precision when carrying the result into another calculation.

Reviewed reference factors

Reviewed reference factors