With this information, you can calculate the quantity of kilograms 631 grams is equal to.

¿What is the inverse calculation between 1 kilogram and 631 grams?

Performing the inverse calculation of the relationship between units, we obtain that 1 kilogram is 1.5847861 times 631 grams.

Which is the same to say that 631 grams is 0.631 kilograms.

Six hundred thirty-one grams equals to zero kilograms. *Approximation

A kilogram is one times six hundred thirty-one grams. *Approximation