Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin instantly. Enter any temperature and get all three scales at once.
Temperature Conversion Formulas
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 |
Key Reference Points
| 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 |
About the Three Scales
Celsius (°C)
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.
Fahrenheit (°F)
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.
Kelvin (K)
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.