1 kilogram is equal to 1000 grams.
6 kilograms is equal to 6000 grams.
60 kilograms is equal to 60,000 grams.
600 kilograms is equal to 600,000 grams.
Just multiply your kilograms by 1000 to convert to grams.
Alternatively, divide your grams by 1000 to get your kilograms.