At One Place

4 g to mg

4 grams in milligrams
4 g = 4,000 mg
mg = g × 1,000

4 grams is 4,000 milligrams. To get there, multiply by 1,000.

Values either side

Grams near 4, converted to milligrams.
Grams Milligrams
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
8 g 8,000

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 4 g in milligrams?
4 g is 4,000 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