To convert Fahrenheit to Celsius, use °C = (°F − 32) × 5/9. For example, 68 °F equals 20 °C. Enter any value above and the result appears instantly — free and entirely in your browser, with nothing uploaded.
How do you convert Fahrenheit to Celsius?
The conversion formula is °C = (°F − 32) × 5/9. The two scales have different zero points and step sizes, so you shift as well as scale.
Fahrenheit to Celsius conversion table
| °F | °C |
|---|---|
| 0 °F | -17.7778 °C |
| 10 °F | -12.2222 °C |
| 20 °F | -6.66667 °C |
| 37 °F | 2.77778 °C |
| 100 °F | 37.7778 °C |
What is Fahrenheit (°F)?
Degrees Fahrenheit (°F) is the temperature scale used mainly in the United States: water freezes at 32 °F and boils at 212 °F, giving 180 degrees between the two points.
What is Celsius (°C)?
Degrees Celsius (°C) is the everyday metric temperature scale: water freezes at 0 °C and boils at 100 °C at sea level. It is used almost everywhere except the United States.
Why convert Fahrenheit to Celsius?
Celsius is standard in most of the world, Fahrenheit dominates in the United States, and kelvin is the scientific scale. Recipes, weather and travel constantly require switching between them.
By international definition, water freezes at 0 °C (32 °F, 273.15 K) and boils at 100 °C (212 °F) at standard atmospheric pressure (NIST). Normal human body temperature is about 37 °C (98.6 °F).
How to convert Fahrenheit to Celsius
- Enter the value in Fahrenheit into the left field of the converter.
- Read the result in Celsius instantly in the right field — it updates automatically.
- Use the swap button to reverse the direction (Celsius to Fahrenheit).
The converter runs entirely in your browser: no uploads, no queue, no limits. You can even use it offline.