Fahrenheit to Celsius
This converter turns Fahrenheit into Celsius instantly as you type — 1 Fahrenheit is -17.2222 °C. Every result is calculated in your browser, so there is nothing to upload and nothing to wait for.
Below the calculator you will find a reference table of commonly converted values, which is usually faster than typing if you just need a rough number. You can also switch the direction at any time to convert Celsius back to Fahrenheit.
1 °F = -17.2222 °C
Quick reference
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| -40 | -40 |
| 0 | -17.7778 |
| 20 | -6.6667 |
| 25 | -3.8889 |
| 37 | 2.7778 |
| 100 | 37.7778 |
Your images never leave your device. All processing happens locally in your browser.
How to use
- Drop your image into the box above.
- Adjust the target size, width or output format.
- Click download — the file is created on your device.
Frequently asked questions
How many Celsius are in one Fahrenheit?
One Fahrenheit equals -17.2222 °C Celsius. The calculator above applies this automatically for any value you enter.
Is this converter accurate?
Yes. It uses the exact international conversion factors rather than rounded approximations, and results are shown with sensible decimal places instead of long floating-point noise.
How do I convert Celsius to Fahrenheit?
Use the swap button to reverse the direction, or enter your value in the right-hand field — both fields stay in sync.