Temperature Converter
See Celsius, Fahrenheit and Kelvin side-by-side as you type.
Inputs
Result
100°C
212.00°F
Visual breakdown
Celsius
100°C
Fahrenheit
212°F
Kelvin
373.15 K
Frozen?
No
Water at 1 atm
Formula
°F = °C × 9/5 + 32 · K = °C + 273.15 · °C = (°F − 32) × 5/9.
Example
100°C = 212°F = 373.15 K (boiling water at sea level).
Frequently asked
What's absolute zero?
0 K = −273.15°C = −459.67°F. The coldest possible temperature in classical physics.
Where do Celsius and Fahrenheit cross?
−40°C = −40°F. Below that, F values are larger; above, C values are smaller.
Is Rankine supported?
Not yet — it's rarely used outside specific engineering domains.