Convert between Celsius, Fahrenheit, and Kelvin instantly. Enter any temperature and get all three scales at once.
All three temperature scales relate to each other through simple arithmetic:
| Convert From | Convert To | Formula |
|---|---|---|
| Celsius | Fahrenheit | (°C × 9/5) + 32 |
| Fahrenheit | Celsius | (°F − 32) × 5/9 |
| Celsius | Kelvin | °C + 273.15 |
| Kelvin | Celsius | K − 273.15 |
| Fahrenheit | Kelvin | (°F − 32) × 5/9 + 273.15 |
| Landmark | Celsius | Fahrenheit | Kelvin |
|---|---|---|---|
| Absolute Zero | −273.15°C | −459.67°F | 0 K |
| Water Freezes | 0°C | 32°F | 273.15 K |
| Body Temperature | 37°C | 98.6°F | 310.15 K |
| Water Boils | 100°C | 212°F | 373.15 K |
The global standard for everyday temperature, used by most countries. Water freezes at 0°C and boils at 100°C at sea level — a clean, logical scale based on water's properties.
Primarily used in the United States. The scale was defined using brine (0°F) and body temperature (96°F, later standardized to 98.6°F). Water freezes at 32°F and boils at 212°F.
The SI unit of temperature used in science. Kelvin starts at absolute zero — the coldest possible temperature where all molecular motion stops. Notice: no degree symbol is used with Kelvin.