Temperature Converter
Celsius, Fahrenheit, Kelvin
Enter a temperature above to see all conversions.
Conversion Formulas
°F = (°C × 9/5) + 32
°C = (°F − 32) × 5/9
K = °C + 273.15
°C = K − 273.15
K = (°F − 32) × 5/9 + 273.15
°F = (K − 273.15) × 9/5 + 32
Reference Points
| Point | °C | °F | K |
|---|---|---|---|
| Absolute zero | -273.15 | -459.67 | 0 |
| Water freezes | 0 | 32 | 273.15 |
| Body temp | 37 | 98.6 | 310.15 |
| Water boils | 100 | 212 | 373.15 |
FAQ
How do you convert Celsius to Fahrenheit?
Use °F = (°C × 9/5) + 32. So 0°C = 32°F (freezing), 100°C = 212°F (boiling), and 37°C = 98.6°F (body temperature).
Why does Kelvin not use the degree symbol?
Kelvin is an absolute thermodynamic scale with no negative values. It is written as 'K' (not °K) per SI convention, because it represents units on an absolute scale rather than degrees on a relative one.