Fahrenheit to Celsius (°F to °C)
Convert Fahrenheit to Celsius in one step, learn the formula, and use the quick temperature reference table.
Quick answer: To convert Fahrenheit to Celsius, subtract 32 and multiply by 5/9: °C = (°F − 32) × 5/9. For example, 98.6 °F = (98.6 − 32) × 5/9 = 37 °C. Water freezes at 32 °F (0 °C) and boils at 212 °F (100 °C).
Fahrenheit to Celsius formula
The conversion removes the 32-degree offset and rescales by 5/9:
°C = (°F − 32) × 5/9
Subtracting 32 first aligns the freezing points, and the 5/9 factor shrinks each Fahrenheit degree to its Celsius size. This is the exact inverse of the Celsius-to-Fahrenheit formula.
How to convert °F to °C in 3 steps
- Take the temperature in Fahrenheit (for example, 68 °F).
- Subtract 32 → 68 − 32 = 36, then multiply by 5/9 → 36 × 5/9 = 20.
- Read the result → 68 °F = 20 °C.
Convert any value instantly. Skip the math and use the live tool.
Open the converterWorked examples
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| -40 °F | -40 °C |
| 32 °F | 0 °C |
| 50 °F | 10 °C |
| 68 °F | 20 °C |
| 77 °F | 25 °C |
| 86 °F | 30 °C |
| 98.6 °F | 37 °C |
| 212 °F | 100 °C |
Fahrenheit vs Celsius
Fahrenheit (°F) is used mainly in the US, with water freezing at 32° and boiling at 212°. Celsius (°C) is the metric standard used worldwide and in science. The two scales are equal at -40°, the single point where °F and °C read the same.
Frequently asked questions
How do you convert Fahrenheit to Celsius?
Subtract 32 from the Fahrenheit value, then multiply by 5/9. For example, 68 °F = (68 − 32) × 5/9 = 20 °C.
What is 32 °F in Celsius?
32 °F equals 0 °C, the freezing point of water.
What is 98.6 °F in Celsius?
98.6 °F equals 37 °C, normal human body temperature.