Convert Fahrenheit to Celsius
Use this free converter to change fahrenheit (°F) into celsius (°C). Fahrenheit and celsius both measure temperature. As a quick reference, 1 °F equals -17.222222 °C, and 1 °C equals 33.8 °F.
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Celsius (°C)
-17.222222
1 °F = -17.222222 °C
Temperature conversion table
| Fahrenheit | Celsius |
|---|---|
| 0.01 | -17.772222 |
| 0.1 | -17.722222 |
| 0.5 | -17.5 |
| 1 | -17.222222 |
| 2 | -16.666667 |
| 3 | -16.111111 |
| 5 | -15 |
| 10 | -12.222222 |
| 20 | -6.6666667 |
| 25 | -3.8888889 |
| 50 | 10 |
| 100 | 37.777778 |
| 1,000 | 537.77778 |
How to convert Fahrenheit to Celsius
°C = (°F − 32) × 5/9
- Enter the number of fahrenheit you want to convert.
- The converter instantly shows the equivalent value in celsius.
- For example, 25 °F = -3.8888889 °C using the formula above.
- Use the swap button to reverse the conversion (celsius to fahrenheit).
About these units
Fahrenheit (°F)
- Definition
- The degree Fahrenheit (°F) is a temperature unit where water freezes at 32° and boils at 212° at standard pressure.
- History
- Introduced by physicist Daniel Gabriel Fahrenheit in 1724 using brine and body temperature as reference points.
- Current use
- Fahrenheit remains the common temperature scale in the United States and a few other territories.
Celsius (°C)
- Definition
- The degree Celsius (°C) is a metric temperature unit where water freezes at 0° and boils at 100° at standard pressure.
- History
- Proposed by Swedish astronomer Anders Celsius in 1742 (originally inverted), the scale was later flipped to its modern form.
- Current use
- Celsius is the everyday temperature scale across most of the world for weather, cooking, and medicine.
Frequently asked questions
How many celsius are in a fahrenheit?
There are -17.222222 °C in 1 °F. To convert, apply the temperature formula shown above.
How do I convert fahrenheit to celsius?
°C = (°F − 32) × 5/9 For example, 10 °F = -12.222222 °C.
Is this fahrenheit-to-celsius converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Fahrenheit to other temperature units
| Unit | 1 Fahrenheit equals |
|---|---|
| Celsius (°C) | -17.222222 °C |
| Kelvin (K) | 255.92778 K |
| Rankine (°R) | 460.67 °R |