s displacement law. Determine the wavelength at which a blackbody radiates most energy.">

Wien's Law Calculator

Free calculate peak wavelength of blackbody radiation using wien's displacement law: λ_max = b / t. Get instant, accurate results with our easy-to-use calculator.

Input Parameters

Example: 5778 K (Sun's surface temperature)

Results

Enter temperature to calculate peak wavelength

Wien's Displacement Law

Wien's Law Formula

λ_max = b / T

Where λ_max = peak wavelength, b = Wien's constant (2.898×10⁻³ m·K), T = temperature

Examples

  • • Sun (5778 K): ~502 nm (green)
  • • Incandescent bulb (3000 K): ~966 nm (infrared)
  • • Human body (310 K): ~9350 nm (infrared)

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