Celsius ↔ Fahrenheit Converter
Convert Celsius to Fahrenheit or Fahrenheit to Celsius instantly. Free temperature converter with common reference points.
Common Reference Points
| Description | °C | °F |
|---|---|---|
| Absolute zero | −273.15 | −459.67 |
| Water freezes | 0 | 32 |
| Body temperature | 37 | 98.6 |
| Water boils | 100 | 212 |
How to Convert Celsius to Fahrenheit
To convert Celsius to Fahrenheit: multiply by 9/5 (1.8), then add 32.
Formula: °F = (°C × 9/5) + 32
To convert Fahrenheit to Celsius: subtract 32, then multiply by 5/9.
Formula: °C = (°F − 32) × 5/9
A quick mental trick: double the Celsius temperature and add 30 to get an approximate Fahrenheit value.