1 kilogram is equal to 1000 grams or 1kg = 1000g When measuring mass, you use weighing scales. These can be digital or analogue. On analogue scales, measurements may be marked in grams ...

As they are over 1000 grams we can measure them in kilograms ... or kilogram masses to the other side until the scales are level. Masses for weighing usually come as 0.5 kg, 1 kg, 5 kg, 10 ...