This free temperature converter changes Celsius (°C) into Fahrenheit (°F) and back, instantly and in your browser. Celsius is the metric standard used in most of the world, while Fahrenheit is the everyday scale in the United States — so this is one of the most common conversions in cooking, weather and travel.
How it works
A Celsius degree is 1.8 times the size of a Fahrenheit degree, and the two scales start from different zero points. The conversion therefore multiplies by 1.8 and adds the 32-degree offset:
°F = °C × 1.8 + 32
To reverse it, subtract 32 first, then divide by 1.8: °C = (°F − 32) ÷ 1.8. The additive offset is what makes temperature conversion non-proportional — unlike length or mass, you cannot simply scale by a single factor.
Example
Convert 37 °C (body temperature) to Fahrenheit:
37 × 1.8 + 32 = 66.6 + 32 = 98.6 °F
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| 0 °C | 32 °F |
| 20 °C | 68 °F |
| 37 °C | 98.6 °F |
| 100 °C | 212 °F |
All calculations run entirely in your browser with no data sent to any server.