Kilograms. Even tiny babies that are 1.8kg aren't measured with grams.
Kilogram
Kilograms!
Kilograms
Grams
You measure your carrot in grams,but for a pack of carrots it would be kilograms.
kilograms
Kilogram
Kilograms!
Kilograms
you can't use kilograms to measure a orange, but you can use grams.
grams
Grams
You would measure a boy's weight in kilograms. Grams are more suited for measuring small, lightweight items.
You would typically measure an encyclopedia in grams, as kilograms are typically used to measure heavier weights. A typical encyclopedia would not weigh enough to be measured in kilograms.
grams
Grams
I would describe their weight in grams.