1 °C = 33.8 °F
The multiply-by-9/5-and-add-32 formula reflects two independent choices: Fahrenheit’s smaller degree and its non-zero freezing point. A useful mental check is that 16 °C is 61 °F and 28 °C is 82 °F — digit-reversal pairs that happen to line up.
Formula °F = (°C × 9/5) + 32
Type in either field — the other updates on every keystroke. Need other units? Open the full temperature converter.
| Celsius | Fahrenheit |
|---|---|
| -40 °C | -40 °F |
| -20 °C | -4 °F |
| -10 °C | 14 °F |
| 0 °C | 32 °F |
| 10 °C | 50 °F |
| 20 °C | 68 °F |
| 25 °C | 77 °F |
| 30 °C | 86 °F |
| 37 °C | 98.6 °F |
| 50 °C | 122 °F |
| 75 °C | 167 °F |
| 100 °C | 212 °F |
| 200 °C | 392 °F |
| Fahrenheit | Celsius |
|---|---|
| -40 °F | -40 °C |
| -20 °F | -28.89 °C |
| -10 °F | -23.33 °C |
| 0 °F | -17.78 °C |
| 10 °F | -12.22 °C |
| 20 °F | -6.67 °C |
| 25 °F | -3.89 °C |
| 30 °F | -1.11 °C |
| 37 °F | 2.78 °C |
| 50 °F | 10 °C |
| 75 °F | 23.89 °C |
| 100 °F | 37.78 °C |
| 200 °F | 93.33 °C |
| Situation | From | To |
|---|---|---|
| Water freezes | 0 °C | 32 °F |
| Room temperature | 20 °C | 68 °F |
| Body temperature | 37 °C | 98.6 °F |
| Hot oven | 180 °C | 356 °F |
| Water boils | 100 °C | 212 °F |
| Where the scales meet | -40 °C | -40 °F |
Double the Celsius figure and add 30. For 20°C: 70°F, against an exact 68°F. It loses accuracy at extremes, so use it for weather only.
Weather forecasts, oven dials, thermostats and fevers cross the divide. Normal body temperature is 37°C or 98.6°F, a hot oven at 180°C is 356°F (recipes round this to 350°F), and water boils at 100°C or 212°F.
Multiplying by 1.8 and forgetting to add 32 is the classic error. A change of 10°C is a change of 18°F, so differences scale by 1.8 without the 32.
Anders Celsius proposed his scale in 1742 with 0 as the boiling point and 100 as freezing; it was reversed shortly afterwards. "Degree Celsius" officially replaced "centigrade" in 1948. The two scales meet at -40.
Related guides: Imperial vs metric: differences and quick conversion tricks