How to convert Fahrenheit to Celsius

Conversion factor and calculation steps from Fahrenheit (°F) to Celsius (°C).

Conversion logic

Temperature is converted through the Celsius scale: first the zero offset, then the size of the degree.

°F = °C × 9/5 + 32

(1 °F − 32) × 5/9 = -17.2222222222 °C