Grams to Milligrams – gram to milligram Converter

1 g = 1000 mg

grams (g)

milligrams (mg)1000

Formula

mg = g × 1000

Grams to milligrams conversion table

grams (g)	milligrams (mg)
0.5 g	500 mg
1 g	1000 mg
2 g	2000 mg
3 g	3000 mg
5 g	5000 mg
10 g	10000 mg
20 g	20000 mg
25 g	25000 mg
50 g	50000 mg
75 g	75000 mg
100 g	100000 mg
250 g	250000 mg
500 g	500000 mg
1000 g	1000000 mg
5000 g	5000000 mg

Grams and milligrams are both weight units. One gram equals 1000 milligrams; enter any value above for an instant result, or use the table for common conversions.

Sanity-check examples

1 g = 1000 mg
10 g = 10000 mg
100 g = 100000 mg

Common pitfalls and look-alike units

The market jin is 500 g and the liang is 50 g (1 jin = 10 liang) — a different system from the imperial pound (1 lb ≈ 453.592 g). In traditional Chinese medicine the old liang of 31.25 g (16 liang per jin) still applies, so prescription doses must not be converted with market units.

Frequently asked questions

How many milligrams are in a gram?

1 gram (g) equals 1000 milligram (mg).

How do I convert grams to milligrams?

Multiply the gram value by 1000 to get milligram — for example, 2 grams = 2000 milligram.

How do I convert milligrams back to grams?

1 milligram equals 0.001 gram. Use the swap button or the reverse conversion page linked on this page.

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