Fahrenheit to Celsius Converter
Convert °F to °C instantly — type in either box and the answer appears as you type.
100°F = 37.78°C
The formula
°C = (°F − 32) × 5/9
Example: 100°F converts to 37.8°C — 100 − 32 = 68, 68 × 5/9 = 37.8°C.
Fahrenheit to Celsius conversion table
How do you convert Fahrenheit to Celsius?
Subtract 32 from the Fahrenheit temperature, then multiply by 5/9: °C = (°F − 32) × 5/9. For example, (100°F − 32) × 5/9 = 37.8°C.
What is the fastest way to estimate Fahrenheit to Celsius?
Subtract 30 from the Fahrenheit number and divide by 2. For 80°F that gives roughly 25°C (the exact answer is 26.7°C) — good enough for everyday weather.
What is 98.6°F in Celsius?
98.6°F equals 37°C — the classic value for normal human body temperature.
At what temperature are Celsius and Fahrenheit equal?
At −40 degrees: −40°C = −40°F. It is the one point where the two scales meet.