How Does It Work?
- Type in either boxCelsius on the left, Fahrenheit on the right. Whichever you edit, the other follows.
- Read the conversionThe formula is written out underneath so you can see exactly how the number was reached.
- Check the reference tableBody temperature, oven settings and weather ranges are listed below for quick lookups.
What Is It Used For?
Two countries and one scale apart: recipes, weather forecasts, medical thermometers and oven dials all switch between Celsius and Fahrenheit depending on where they were written. The conversion is not a simple multiplication because the two scales have different zero points as well as different step sizes.
- Following a recipe with oven temperatures in the other scale.
- Reading a weather forecast from abroad.
- Checking whether a fever reading is high, in either scale.
- Setting an air conditioner or thermostat sold in another market.
- Homework and science problems that mix scales.
Examples
| Celsius | Fahrenheit | What it is |
|---|---|---|
| −40 °C | −40 °F | The point where both scales meet |
| 0 °C | 32 °F | Water freezes |
| 20 °C | 68 °F | Comfortable room temperature |
| 37 °C | 98.6 °F | Normal body temperature |
| 100 °C | 212 °F | Water boils at sea level |
| 180 °C | 356 °F | Common baking temperature |