Temperature Converter
Convert temperatures between Celsius, Fahrenheit, kelvin and Rankine.
Make this result useful
Use it now, or keep a copy for later. We never save your tool input automatically.
How to use this tool
Enter a temperature, select the source and target scales, then convert.
Important to know
Convert temperatures between Celsius, Fahrenheit, kelvin and Rankine.
Temperature scales require an offset as well as a factor. Inputs below absolute zero are rejected. Kelvin is written K, not °K.
Formula and methodology
K = °C + 273.15; K = (°F + 459.67) × 5/9; °R = K × 9/5.
Example
0 °C equals 32 °F and 273.15 K.
Frequently asked questions
Why can’t temperature use a simple multiplier?
Celsius and Fahrenheit have different zero points as well as different degree sizes.