Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin in real time. Type in any field and the other two update instantly.
-40°C 0°C 50°C 100°C
Water Freezes
0°C / 32°F
273.15 K
Body Temp
37°C / 98.6°F
310.15 K
Water Boils
100°C / 212°F
373.15 K
About Temperature Conversion
Temperature conversion is a common task in science, cooking, and engineering. The three most widely used temperature scales are Celsius, Fahrenheit, and Kelvin, each with its own reference points and applications.
Conversion Formulas
- Celsius to Fahrenheit: F = C × 9/5 + 32
- Celsius to Kelvin: K = C + 273.15
- Fahrenheit to Celsius: C = (F − 32) × 5/9
- Kelvin to Celsius: C = K − 273.15
Temperature Scales Explained
Celsius is used worldwide in everyday contexts, with water freezing at 0°C and boiling at 100°C at sea level. Fahrenheit is primarily used in the United States, where water freezes at 32°F and boils at 212°F. Kelvin is the SI unit of temperature used in science, starting at absolute zero (−273.15°C), the point where all molecular motion theoretically stops.