Fahrenheit to Celsius Converter
Instant °F to °C conversion. Enter a number and get the answer right away.
How to Convert °F to °C
1 °F equals -17.2222 °C. To convert °F to °C, subtract 32 from the °F value, then multiply by 0.555556 (°C = (°F - 32) × 5/9). For example, 10 °F is -12.2222 °C. The calculator above applies the same conversion in both directions, so you can also type a value in °C to get °F.
°C = (°F - 32) × 5/9
One °F equals -17.2222 °C. Use the formula below for any number.
°F to °C Conversion Table
| °F | °C |
|---|---|
| -40 °F | -40 °C |
| -10 °F | -23.3333 °C |
| 0 °F | -17.7778 °C |
| 10 °F | -12.2222 °C |
| 20 °F | -6.6667 °C |
| 25 °F | -3.8889 °C |
| 30 °F | -1.1111 °C |
| 37 °F | 2.7778 °C |
| 40 °F | 4.4444 °C |
| 50 °F | 10 °C |
| 75 °F | 23.8889 °C |
| 100 °F | 37.7778 °C |
| 150 °F | 65.5556 °C |
| 200 °F | 93.3333 °C |
| 212 °F | 100 °C |
Common °F to °C Conversions
When You Need This Conversion
Useful for weather forecasts, oven and baking temperatures, and reading a fever thermometer abroad.
Units and Conventions
Temperature scales are offset, not just scaled: C = (F - 32) x 5/9. The two scales meet at -40. Kelvin uses the same step as Celsius but starts at absolute zero.
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Frequently Asked Questions
How many °C are in 1 °F?
1 °F equals -17.2222 °C. The formula is °C = (°F - 32) × 5/9.
What is the °F to °C formula?
Use °C = (°F - 32) × 5/9. The calculator above applies it instantly and also works in reverse.
Can I convert °C back to °F?
Yes. Type a value into the second field and the calculator converts in the opposite direction.
Is this converter free and accurate?
Yes. It runs in your browser with no signup. Results come from the exact conversion factor shown on this page and are rounded to 4 decimal places.
Which standard does this page use?
See the Units and Conventions section above - it lists the exact definition used here and the alternatives common in other countries.
Does it work on my phone?
Yes. The calculator is designed for phones first, with large inputs and instant results as you type.