At One Place

Milligrams to grams

1 milligram in grams
1 mg = 0.001 g
g = mg × 0.001

To convert milligrams to grams, multiply by 0.001. The table below gives the values people look up most often, and the converter works for any number.

Milligrams to grams table

Common milligram values converted to grams.
Milligrams Grams
1 mg 0.001
2 mg 0.002
3 mg 0.003
4 mg 0.004
5 mg 0.005
10 mg 0.01
15 mg 0.015
20 mg 0.02
25 mg 0.025
30 mg 0.03
40 mg 0.04
50 mg 0.05
75 mg 0.075
100 mg 0.1
250 mg 0.25
500 mg 0.5
1,000 mg 1

How the conversion works

The relationship is g = mg × 0.001. Both units measure mass, so the conversion is a fixed factor that never changes.

Common questions

How many grams are in one milligram?
One milligram equals 0.001 grams. g = mg × 0.001.
How do you convert milligrams to grams?
Use g = mg × 0.001. So 10 mg is 0.01 g.
How many milligrams are in one gram?
One gram equals 1,000 milligrams, 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