Temperature Converter
Convert between Celsius (°C), Fahrenheit (°F), and Kelvin (K). Enter a value and choose the unit; the other two update automatically. Uses the standard formulas: F = C×9/5+32, K = C+273.15. Useful for recipes, weather, and science.
Convert temperature
Enter value and choose unit to convert.
How it works
C to F: F = C × 9/5 + 32. F to C: C = (F − 32) × 5/9. K to C: C = K − 273.15. C to K: K = C + 273.15. We convert the input to Celsius first, then to the other units.
Example: 25 °C = 77 °F = 298.15 K.
When to use it
Use it for cooking (ovens in °F vs °C), weather, or any calculation that needs temperature in a different scale.
Frequently asked questions
- Why is Kelvin used? Kelvin is the SI unit for temperature; 0 K is absolute zero. Science and engineering often use Kelvin.
- Are the formulas exact? Yes. The relationships between C, F, and K are defined exactly as above.