About this calculator
Convert Celsius, Fahrenheit and Kelvin.
Kelvin cannot be below absolute zero.
Formula
C→F = C×9/5+32. K = C+273.15.
Example
20°C = 68°F = 293.15K.
Accuracy
NUMTX shows the assumptions next to the calculation so you can replace defaults with values that match your situation. For measurements, supplier rates, fees, interest, tax or regulated work, confirm important figures with the appropriate official or professional source.