Kelvin to °F: °F = (K − 273.15) × 9/5 + 32. Fahrenheit to K: K = (°F − 32) × 5/9 + 273.15.

273.15 K = 32 °F (freezing water). 373.15 K = 212 °F (boiling water).

Zero Kelvin is absolute zero. 0 °C = 273.15 K; the formula converts via Celsius.

Online Kelvin to Fahrenheit Converter

Convert between Kelvin and Fahrenheit. °F = (K − 273.15) × 9/5 + 32. Bidirectional, client-side only.

ConvertKelvin (K)

Frequently Asked Questions

What is the formula?: Kelvin to °F: °F = (K − 273.15) × 9/5 + 32. Fahrenheit to K: K = (°F − 32) × 5/9 + 273.15.
Example?: 273.15 K = 32 °F (freezing water). 373.15 K = 212 °F (boiling water).
Why 273.15?: Zero Kelvin is absolute zero. 0 °C = 273.15 K; the formula converts via Celsius.

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