Kelvin
Kelvin (K) is a unit of temperature.
One kelvin is equal to -272.15 celsius (C).
Celsius
Celsius (C) is a unit of temperature.
One celsius is equal to 274.15 kelvin (K).
How to convert kelvin to celsius
C = K - 273.15 -272.15C = 1K - 273.15
C = K - 273.15 -272.15C = 1K - 273.15
Apply the Kelvin to Celsius formula, then round as needed.
Example
Convert 20 K to celsius:
C = K - 273.15 -253.15C = 20K - 273.15
C = K - 273.15 -253.15C = 20K - 273.15
How to convert 10K to celsius
C = K - 273.15 -263.15C = 10K - 273.15