Celsius to Fahrenheit converter
Provide a temperature below to convert Celsius (°C) to Fahrenheit (°F). For the reverse direction, visit the Fahrenheit to Celsius converter.
To convert Celsius to Fahrenheit, multiply the Celsius temperature by 9/5 and add 32. The formula is: °F = (°C × 9/5) + 32.
For example, 0°C equals 32°F, which is the freezing point of water. 100°C equals 212°F, the boiling point of water at sea level.
Celsius
Definition: Celsius (symbol: °C) is a temperature scale based on the freezing point of water at 0°C and the boiling point at 100°C under standard atmospheric pressure.
History: The Celsius scale was developed by Swedish astronomer Anders Celsius in 1742. Originally, he set 0° as the boiling point and 100° as the freezing point, but this was later reversed. The scale is named in his honor.
Current use: Celsius is the primary temperature scale used worldwide, particularly in scientific contexts and in most countries for everyday temperature measurements. It is the standard scale in the metric system.
Fahrenheit
Definition: Fahrenheit (symbol: °F) is a temperature scale where water freezes at 32°F and boils at 212°F under standard atmospheric pressure.
History: Developed by German physicist Daniel Gabriel Fahrenheit in 1724, the scale originally used the freezing point of brine as 0°F. The scale became widely adopted in English-speaking countries.
Current use: Fahrenheit is primarily used in the United States, its territories, and some Caribbean nations. Most other countries have adopted Celsius. The scale remains common in U.S. weather forecasts and household thermostats.
| Celsius [°C] | Fahrenheit [°F] |
|---|---|
| -40 °C | -40 °F |
| -20 °C | -4 °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 |
| 100 °C | 212 °F |