Fahrenheit to Celsius Converter
Enter a value to instantly convert between temperature units.
1 Fahrenheit = -17.2222 Celsius
Key Formulas
Celsius → Fahrenheit
°F = f(°C)Fahrenheit → Celsius
°C = f(°F)Celsius → Kelvin
K = f(°C)Kelvin → Celsius
°C = f(K)Formula
°C = (°F − 32) ÷ 1.8Fahrenheit and Celsius use different zero points and interval sizes. Subtracting 32 aligns the zero points, then dividing by 1.8 converts Fahrenheit-sized intervals to Celsius-sized intervals. This is useful when a US weather report, recipe, thermostat, or thermometer must be read on a Celsius scale.
Source: NIST SP 811, Appendix B.8
Reviewed by the Convert Calc editorial team · Last reviewed: · see our methodology
Frequently Asked Questions
Real-World Examples
A US recipe specifies a 350°F oven, and the cook converts it to 176.67°C before choosing the nearest setting available on a Celsius oven.
350 °F = 176.67 °C
A thermometer reading of 98.6°F must be recorded in a chart that uses degrees Celsius.
98.6 °F = 37 °C
A thermostat set to 72°F is converted to 22.22°C for someone familiar with Celsius controls.
72 °F = 22.22 °C
A forecast at 32°F is converted to 0°C, the reference point near which water freezes under ordinary atmospheric conditions.
32 °F = 0 °C