Fahrenheit to Celsius Converter (°F to °C)
By Santaji GadepatilinUpdated October 27, 2026
Fahrenheit is used for weather and cooking in the US, while Celsius is used almost everywhere else. Water freezes at 32 °F (0 °C) and boils at 212 °F (100 °C). This free Fahrenheit to Celsius converter converts instantly in both directions and includes a quick reference table.
How to use the Fahrenheit to Celsius converter
Type a temperature in Fahrenheit, Celsius or Kelvin — the others update instantly.
Fahrenheit to Celsius formula
°C = (°F − 32) × 5 ÷ 9 · °F = °C × 9 ÷ 5 + 32
Fahrenheit to Celsius chart
| °F | °C | °F | °C |
|---|---|---|---|
| -40 °F | -40.0 °C | 80 °F | 26.7 °C |
| 0 °F | -17.8 °C | 90 °F | 32.2 °C |
| 10 °F | -12.2 °C | 98.6 °F | 37.0 °C |
| 20 °F | -6.7 °C | 100 °F | 37.8 °C |
| 32 °F | 0.0 °C | 104 °F | 40.0 °C |
| 40 °F | 4.4 °C | 212 °F | 100.0 °C |
| 50 °F | 10.0 °C | 300 °F | 148.9 °C |
| 60 °F | 15.6 °C | 350 °F | 176.7 °C |
| 70 °F | 21.1 °C | 400 °F | 204.4 °C |
Celsius to Fahrenheit chart
| °C | °F | °C | °F |
|---|---|---|---|
| -20 °C | -4.0 °F | 25 °C | 77.0 °F |
| -10 °C | 14.0 °F | 30 °C | 86.0 °F |
| 0 °C | 32.0 °F | 35 °C | 95.0 °F |
| 5 °C | 41.0 °F | 37 °C | 98.6 °F |
| 10 °C | 50.0 °F | 40 °C | 104.0 °F |
| 15 °C | 59.0 °F | 100 °C | 212.0 °F |
| 20 °C | 68.0 °F | 200 °C | 392.0 °F |
Key reference points
| Event | °F | °C |
|---|---|---|
| Water freezes | 32 | 0 |
| Room temperature | 68–72 | 20–22 |
| Normal body temperature | 98.6 (average) | 37 |
| Fever (common threshold) | 100.4 | 38 |
| Water boils (sea level) | 212 | 100 |
| Fahrenheit and Celsius equal | −40 | −40 |
Weather
- Below 32 °F (0 °C): freezing — watch for ice.
- 50–68 °F (10–20 °C): cool to mild.
- 68–77 °F (20–25 °C): comfortable.
- Above 95 °F (35 °C): very hot — stay hydrated.
Ovens
Common oven settings: 325 °F = 160 °C, 350 °F = 180 °C, 400 °F = 200 °C, 425 °F = 220 °C. See the oven temperature converter for gas marks and fan ovens.
Temperature differences
A change of 1 °C equals a change of 1.8 °F. If a forecast says it will be 10 °F warmer, that is about 5.6 °C warmer — do not subtract 32 for differences.
Frequently asked questions
How do I convert Fahrenheit to Celsius?
Subtract 32, then multiply by 5/9. 98.6 °F − 32 = 66.6; × 5/9 = 37 °C.
What is 100 °F in Celsius?
37.8 °C.
What is 350 °F in Celsius?
176.7 °C — usually rounded to 180 °C for ovens.
Is there a quick way to estimate?
Subtract 30 and halve. 80 °F → 50 → 25 °C (exact: 26.7 °C).