Online Fahrenheit to Kelvin Converter
Convert between Fahrenheit and Kelvin. K = (°F − 32) × 5/9 + 273.15. Bidirectional, client-side only.
Frequently Asked Questions
- What is the formula?
- Kelvin = (Fahrenheit − 32) × 5/9 + 273.15. So 32 °F = 273.15 K (freezing water). To go from K to °F: °F = (K − 273.15) × 9/5 + 32.
- Why add 273.15?
- Zero Kelvin is absolute zero. The offset 273.15 aligns the Kelvin scale with Celsius so that 0 °C = 273.15 K; then Fahrenheit is converted via the °C relationship.
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