Unit Converter › Guides › Celsius to Fahrenheit (°C to °F)
Celsius to Fahrenheit (°C to °F) with the exact formula, a ready reference table and worked examples.
°F = °C × 9/5 + 32
Celsius and Fahrenheit are offset scales, so you cannot convert with a single multiplier. Both scales meet at −40°, where −40 °C = −40 °F.
| °C | °F |
|---|---|
| -40 | -40.0 |
| -20 | -4.0 |
| -10 | 14.0 |
| 0 | 32.0 |
| 5 | 41.0 |
| 10 | 50.0 |
| 15 | 59.0 |
| 18 | 64.4 |
| 20 | 68.0 |
| 21 | 69.8 |
| 22 | 71.6 |
| 25 | 77.0 |
| 30 | 86.0 |
| 35 | 95.0 |
| 37 | 98.6 |
| 40 | 104.0 |
| 100 | 212.0 |
| 180 | 356.0 |
| 200 | 392.0 |
| 220 | 428.0 |
A 20 °C room is 68 °F. A 37 °C body temperature is 98.6 °F. Water boils at 100 °C (212 °F) at standard sea-level pressure.
Doubling the Celsius figure and adding 30 gives a rough estimate. It is exact only at 10 °C (50 °F), and the error grows further from there.
Last checked: 29 October 2026.