How to convert degrees Fahrenheit to degrees Celsius
Celsius and Fahrenheit have different zero points and degree sizes, so the conversion needs two steps. To convert, subtract 32 from the Fahrenheit temperature, then multiply by 5/9:
Mental-math shortcut: Subtract 30 and halve it for a quick estimate: 70 °F → 20 °C (exact: 21.1 °C).
Example
Convert 100 degrees Fahrenheit to degrees Celsius: 100 °F − 32 = 68, and 68 × 5/9 = 37.7778 °C.
Fahrenheit to Celsius conversion chart
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| -40 | -40 |
| 0 | -17.7778 |
| 10 | -12.2222 |
| 20 | -6.6667 |
| 32 (freezing) | 0 |
| 40 | 4.4444 |
| 50 | 10 |
| 60 | 15.5556 |
| 70 | 21.1111 |
| 75 | 23.8889 |
| 80 | 26.6667 |
| 90 | 32.2222 |
| 98.6 (body temp.) | 37 |
| 100 | 37.7778 |
| 212 (boiling) | 100 |
| 300 | 148.89 |
| 325 | 162.78 |
| 350 | 176.67 |
| 375 | 190.56 |
| 400 | 204.44 |
| 425 | 218.33 |
| 450 | 232.22 |
What is the Fahrenheit scale?
The Fahrenheit scale (°F) is used mainly in the United States. Water freezes at 32 °F and boils at 212 °F at sea level, so there are 180 degrees between those two points instead of 100. Normal body temperature is about 98.6 °F.
What is the Celsius scale?
The Celsius scale (°C) puts the freezing point of water at 0 °C and its boiling point at 100 °C at sea level. It is used for weather and everyday temperatures in almost every country. Normal human body temperature is about 37 °C.
Converting the other way? Use the Celsius to Fahrenheit converter.
Frequently asked questions
What is 0 °F in °C?
0 °F is -17.7778 °C.
How do I convert Fahrenheit to Celsius?
Use the formula °C = (°F − 32) × 5/9. For example, 100 °F is 37.7778 °C.
What is 350 °F in Celsius?
350 °F is 176.67 °C.
How do I convert Celsius to Fahrenheit?
Use °F = °C × 9/5 + 32, or try our Celsius to Fahrenheit converter.
What is 350 °F in Celsius for baking?
350 °F is about 176.7 °C. Recipes and ovens usually round it to 175 or 180 °C (gas mark 4).
Conversions use the internationally agreed definitions of each unit (for example, 1 inch = 2.54 cm exactly) and are rounded for display. Volume converters use US customary units unless stated otherwise.
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