Grams to Milligrams Converter

Convert grams (g) to milligrams (mg) instantly. 1 gram = 1,000 milligrams.

How to convert grams to milligrams

mg = g × 1,000

To convert grams to milligrams, multiply the weight value by 1,000. One gram (g) is equal to 1,000 milligrams (mg). For quick everyday conversions, the interactive converter above gives you the exact result as you type — no rounding surprises.

Grams to Milligrams conversion table

Grams (g) Milligrams (mg)
1 g 1,000 mg
2 g 2,000 mg
3 g 3,000 mg
4 g 4,000 mg
5 g 5,000 mg
6 g 6,000 mg
7 g 7,000 mg
8 g 8,000 mg
9 g 9,000 mg
10 g 10,000 mg
15 g 15,000 mg
20 g 20,000 mg
25 g 25,000 mg
50 g 50,000 mg
100 g 100,000 mg

Frequently asked questions

How many milligrams are in 1 gram?

1 gram equals 1,000 milligrams.

How do I convert grams to milligrams?

Multiply the number of grams by 1,000. For example, 8 g × 1,000 = 8,000 mg.

What is 8 grams in milligrams?

8 grams is equal to 8,000 milligrams.

Can I convert milligrams back to grams?

Yes — use our Milligrams to Grams converter, or divide by 1,000.