If 0 degre =273 kelvin then what is the need of kelvin we can directely measure by degree Celsius

If 0 degre =273 kelvin then what is the need of kelvin we can directel

1.	If 0 degre =273 kelvin then what is the need of kelvin we can directely measure by degree Celsius
Answer» thank you kushi rana Yaah but it is a formula used to measure temperature