Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin — type in any field.
°F = (°C × 9/5) + 32
K = °C + 273.15
Quick Presets
Common Temperature Reference
| Temperature | °C | °F | K |
|---|---|---|---|
| {{ r.label }} | {{ r.c }} | {{ fmt(r.c * 9/5 + 32) }} | {{ fmt(r.c + 273.15) }} |
Click any row to load it into the converter.
How Temperature Conversion Works
Celsius to Fahrenheit
Multiply by 9, divide by 5, then add 32: °F = (°C × 9/5) + 32
Example: 100°C → (100 × 9/5) + 32 = 212°F
Fahrenheit to Celsius
Subtract 32, then multiply by 5/9: °C = (°F − 32) × 5/9
Example: 98.6°F → (98.6 − 32) × 5/9 = 37°C
Celsius to Kelvin
Add 273.15: K = °C + 273.15. Kelvin starts at absolute zero — the coldest temperature physically possible.
Why Two Scales?
Celsius is used in most of the world and is based on water's freezing (0°C) and boiling (100°C) points. Fahrenheit is used primarily in the United States. Kelvin is the SI base unit used in science and engineering.