Convert milligrams to grams

1 mg = 0.001 g — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.

0.001g
✓ Exact 1 mg = 0.001 g
As a fraction: 1/1000
1 mg = 0.001 g

How to convert milligrams to grams

Multiply the number of milligrams by 0.001 to get grams.

The exact factor is 0.001 — as a fraction, 1/1000.

Milligram to Gram conversion table

Milligrams (mg) Grams (g)
1 mg 0.001
2 mg 0.002
3 mg 0.003
5 mg 0.005
10 mg 0.01
20 mg 0.02
25 mg 0.025
50 mg 0.05
100 mg 0.1
250 mg 0.25
500 mg 0.5
1000 mg 1

Gram to Milligram conversion table

Grams (g) Milligrams (mg)
1 g 1000
2 g 2000
3 g 3000
5 g 5000
10 g 10 000
20 g 20 000
25 g 25 000
50 g 50 000
100 g 100 000
250 g 250 000
500 g 500 000
1000 g 1 000 000

Frequently asked

How many grams are in a milligram?

One milligram equals 0.001 grams (mg → g). That figure is exact, not rounded.

How do you convert milligrams to grams?

Multiply the number of milligrams by 0.001 to get grams.

What is 1 g in milligrams?

One gram is 1000 milligrams.

What is 10 mg in g?

10 mg = 0.01 g.

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