How to convert Gram to Milligram

Conversion factor and calculation steps from Gram (g) to Milligram (mg).

Conversion logic

Each unit is defined via the base unit (kilogram (kg)). The value is first converted to the base unit, then to the selected unit.

1 g = 0.001 kg

1 mg = 1.00000000e-6 kg

1 g × 0.001 = 0.001 kg

0.001 kg ÷ 1.00000000e-6 = 1000 mg