How to convert Celsius to Fahrenheit
Multiply the temperature in degrees Celsius by 9/5 (that is 1.8) and add 32. For example, 20 °C × 1.8 + 32 = 68 °F, and 37 °C × 1.8 + 32 = 98.6 °F. Water freezes at 0 °C (32 °F) and boils at 100 °C (212 °F) at sea level.
The “Also equals” panel shows the same temperature in Kelvin. Use the ⇄ button to switch to Fahrenheit to Celsius.
Celsius to Fahrenheit chart
| Celsius | Fahrenheit |
|---|---|
| −40 °C | −40 °F |
| −30 °C | −22 °F |
| −20 °C | −4 °F |
| −10 °C | 14 °F |
| 0 °C | 32 °F |
| 5 °C | 41 °F |
| 10 °C | 50 °F |
| 15 °C | 59 °F |
| 18 °C | 64.4 °F |
| 20 °C | 68 °F |
| 22 °C | 71.6 °F |
| 25 °C | 77 °F |
| 30 °C | 86 °F |
| 35 °C | 95 °F |
| 37 °C | 98.6 °F |
| 38 °C | 100.4 °F |
| 40 °C | 104 °F |
| 100 °C | 212 °F |
| 150 °C | 302 °F |
| 160 °C | 320 °F |
| 175 °C | 347 °F |
| 180 °C | 356 °F |
| 190 °C | 374 °F |
| 200 °C | 392 °F |
| 220 °C | 428 °F |
| 230 °C | 446 °F |
Where you will use this conversion
- Weather forecasts when traveling to or from countries that use Celsius
- European and UK oven recipes: 180 °C is 356 °F
- Body temperature: 37 °C is 98.6 °F and a fever threshold of 38 °C is 100.4 °F
- Thermostats and room temperature: 21 °C is 69.8 °F
- Science, lab work and aquarium or pool temperatures
Good to know
For a quick mental estimate, double the Celsius value and add 30: 20 °C becomes 70 °F, close to the exact 68 °F. The two scales meet at −40, where −40 °C and −40 °F are the same temperature. Each degree Celsius is 1.8 degrees Fahrenheit, which is why the Fahrenheit numbers move faster.
Frequently asked questions
What is the formula to convert Celsius to Fahrenheit?
Multiply the Celsius temperature by 9/5 (1.8) and add 32. In short: °F = °C × 9/5 + 32.
What is 20 degrees Celsius in Fahrenheit?
20 °C is 68 °F, a typical comfortable room temperature.
What is a 180 °C oven in Fahrenheit?
180 °C is 356 °F. Many US recipes round this to 350 °F.
What is normal body temperature in Fahrenheit?
A body temperature of 37 °C is 98.6 °F. A fever is commonly defined as 38 °C (100.4 °F) or higher.