Find the right temperature
Temperature converter.
Convert Celsius, Fahrenheit, and Kelvin with clear results as you type. Negative temperatures are supported, down to absolute zero.
Temperature calculator
What’s the temperature?
0 °C is about 32 °F.
Popular pairs
A familiar temperature away.
Choose a conversion for its formula, worked examples, and quick reference chart.
Quick reference
Celsius at a glance.
Common temperatures in Fahrenheit and Kelvin.
| Celsius | Fahrenheit | Kelvin | Common reference |
|---|---|---|---|
| −40 | −40 | 233.15 | Scales meet |
| 0 | 32 | 273.15 | Water freezes |
| 20 | 68 | 293.15 | Room temperature |
| 37 | 98.6 | 310.15 | Average body temperature |
| 100 | 212 | 373.15 | Water boils |
Formulas: °F = (°C × 9/5) + 32 · K = °C + 273.15 · °C = K − 273.15
Temperature, explained
Good to know.
Quick answers for the scales and formulas you use most.
How do I convert Celsius to Fahrenheit?
Multiply the Celsius value by 9/5, then add 32. For example, 20°C is 68°F.
What is 0°C in Fahrenheit and Kelvin?
Zero degrees Celsius is 32 degrees Fahrenheit and 273.15 kelvin.
Can I convert negative temperatures?
Yes. Negative Celsius and Fahrenheit temperatures are supported down to absolute zero.
What is absolute zero?
Absolute zero is 0 kelvin, or −273.15°C and −459.67°F. Temperatures below it are not valid.