At One Place

3 g to mg

3 grams in milligrams
3 g = 3,000 mg
mg = g × 1,000

3 grams is 3,000 milligrams. To get there, multiply by 1,000.

Values either side

Grams near 3, converted to milligrams.
Grams Milligrams
1 g 1,000
1.5 g 1,500
2 g 2,000
2.5 g 2,500
3 g ← 3,000
4 g 4,000
5 g 5,000
6 g 6,000
7 g 7,000

How the conversion works

The relationship is mg = g × 1,000. Both units measure mass, so the conversion is a fixed factor that never changes.

Common questions

What is 3 g in milligrams?
3 g is 3,000 mg.
How do you convert grams to milligrams?
Multiply by 1,000.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked