At One Place

Grams to milligrams

1 gram in milligrams
1 g = 1,000 mg
mg = g × 1,000

To convert grams to milligrams, multiply by 1,000. The table below gives the values people look up most often, and the converter works for any number.

Grams to milligrams table

Common gram values converted to milligrams.
Grams Milligrams
1 g 1,000
2 g 2,000
3 g 3,000
4 g 4,000
5 g 5,000
10 g 10,000
15 g 15,000
20 g 20,000
25 g 25,000
30 g 30,000
40 g 40,000
50 g 50,000
75 g 75,000
100 g 100,000
250 g 250,000
500 g 500,000
1,000 g 1,000,000

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

How many milligrams are in one gram?
One gram equals 1,000 milligrams. mg = g × 1,000.
How do you convert grams to milligrams?
Use mg = g × 1,000. So 10 g is 10,000 mg.
How many grams are in one milligram?
One milligram equals 0.001 grams, which is the reverse of the conversion above.

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