Convert Fahrenheit (°F) to Celsius (°C)
Convert Fahrenheit (°F) to Celsius (°C): subtract 32, then multiply by 5/9, so 68 °F is 20 °C. Turns the US Fahrenheit scale into the Celsius scale used across most of the world.
Formula
1 °F = -17.222222 °C
To convert °F to °C, Fahrenheit to Celsius.
Conversion Table
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| 0.01 °F | -17.7722 °C |
| 0.1 °F | -17.7222 °C |
| 0.5 °F | -17.5 °C |
| 1 °F | -17.2222 °C |
| 2 °F | -16.6667 °C |
| 3 °F | -16.1111 °C |
| 5 °F | -15 °C |
| 10 °F | -12.2222 °C |
| 15 °F | -9.4444 °C |
| 20 °F | -6.6667 °C |
| 25 °F | -3.8889 °C |
| 50 °F | 10 °C |
| 100 °F | 37.7778 °C |
| 250 °F | 121.1111 °C |
| 500 °F | 260 °C |
| 1000 °F | 537.7778 °C |
| 2500 °F | 1371.1111 °C |
| 5000 °F | 2760 °C |
| 10000 °F | 5537.7778 °C |
| 50000 °F | 27760 °C |
Common °F to °C Examples
- 1 °F = -17.2222 °C
- 5 °F = -15 °C
- 10 °F = -12.2222 °C
- 25 °F = -3.8889 °C
- 50 °F = 10 °C
- 100 °F = 37.7778 °C
- 500 °F = 260 °C
- 1000 °F = 537.7778 °C
About °F to °C
The formula is °C = (°F − 32) × 5/9. The minus 32 accounts for the different zero points (32 °F = 0 °C), and the 5/9 rescales the degree size. Both scales read minus 40 at the same point.
It's the conversion travellers and cooks reach for most. Quick anchors: 32 °F = 0 °C (freezing), 98.6 °F is about 37 °C (body temperature), and 212 °F = 100 °C (boiling water).
Frequently Asked Questions
How do °F and °C compare in size?
Compare them through the ratio: 1 °F equals -17.222222 °C, which shows directly which unit represents a larger amount of Temperature.
What should I check before trusting a °F to °C result?
Confirm the input value, the unit direction (°F to °C, not the reverse), and that the formula 1 °F = -17.222222 °C has been applied.
Can I convert large numbers of °F to °C at once?
Yes. The same ratio -17.222222 applies to any value, whether it is a fraction or millions of °F.
Is there a shortcut for converting °F to °C?
The shortest route is the formula itself: 1 °F = -17.222222 °C. Memorizing this single line covers every case.
Why is the conversion factor between °F and °C -17.222222?
It comes from the official definitions of both Temperature units, which are anchored to internationally agreed reference standards.
What is a quick way to estimate °F to °C?
Round -17.222222 to one or two significant digits and multiply mentally. Use the exact factor when accuracy matters.