Milligram (mg) Conversion Calculator

Grams (g)
1
Kilograms (kg)
0.001
Ounces (oz)
0.035274
Pounds (lb)
0.002205

Understanding Milligrams (mg)

A milligram (mg) is a unit of mass in the metric system equal to one-thousandth (1/1,000) of a gram. It's commonly used in:

  • Medicine and pharmaceutical dosing
  • Nutritional information on food labels
  • Scientific measurements and research
  • Chemical compositions and formulations

Common Conversions

  • 1,000 mg = 1 gram
  • 1,000,000 mg = 1 kilogram
  • 28,349.5 mg = 1 ounce
  • 453,592 mg = 1 pound