Fahrenheit to Celsius Converter
Convert °F to °C instantly using °C = °F × 0.5555555556 − 17.77777778.
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Conversion Formula
°C = °F × 0.5555555556 − 17.77777778
Example
25 °F × 0.5555555556 − 17.77777778 = -3.888888889 °C
Convert the other way: Celsius to Fahrenheit →
Fahrenheit to Celsius Conversion Table
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| -40 | -40 |
| -20 | -28.88888889 |
| 0 | -17.77777778 |
| 10 | -12.22222222 |
| 20 | -6.666666667 |
| 25 | -3.888888889 |
| 30 | -1.111111111 |
| 37 | 2.777777778 |
| 50 | 10 |
| 100 | 37.77777778 |
| 180 | 82.22222222 |
| 200 | 93.33333333 |
About These Units
- Fahrenheit (°F)
- A temperature scale on which water freezes at 32 °F and boils at 212 °F at standard pressure, so one degree is exactly 5/9 of a kelvin. It is the everyday scale in the United States.
- Celsius (°C)
- A temperature scale defined from the kelvin: a reading in °C equals the kelvin value minus exactly 273.15. Water freezes near 0 °C and boils near 100 °C at sea level, and most countries use it for weather and cooking.
Frequently Asked Questions
How do I convert Fahrenheit to Celsius?
Use the formula °C = °F × 0.5555555556 − 17.77777778. For example, 25 °F × 0.5555555556 − 17.77777778 = -3.888888889 °C. The scales have different zero points, so you cannot simply multiply.
What is 0 °F in °C?
0 °F equals -17.77777778 °C.
What is 100 °F in °C?
100 °F equals 37.77777778 °C.