Grams to mg Converter (Grams to Milligrams)

1 gram = 1,000 milligrams. To convert g to mg, multiply by 1,000.

1 g

1,000 mg

1 mg

0.001 g

10 g

10,000 mg

100 g

100,000 mg

Printable chart

Grams to mg chart

66 common values · mg = g × 1,000

Grams (g)	Milligrams (mg)
1	1,000
2	2,000
3	3,000
4	4,000
5	5,000
6	6,000
7	7,000
8	8,000
9	9,000
10	10,000
11	11,000
12	12,000
13	13,000
14	14,000
15	15,000
16	16,000
17	17,000
18	18,000
19	19,000
20	20,000
25	25,000
30	30,000
35	35,000
40	40,000
45	45,000
50	50,000
55	55,000
60	60,000
65	65,000
70	70,000
75	75,000
80	80,000
85	85,000
90	90,000
95	95,000
100	100,000
110	110,000
120	120,000
130	130,000
140	140,000
150	150,000
160	160,000
170	170,000
180	180,000
190	190,000
200	200,000
250	250,000
300	300,000
350	350,000
400	400,000
450	450,000
500	500,000
550	550,000
600	600,000
650	650,000
700	700,000
750	750,000
800	800,000
850	850,000
900	900,000
950	950,000
1,000	1,000,000
1,500	1,500,000
2,000	2,000,000
5,000	5,000,000
10,000	10,000,000

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How to convert Grams to mg

1 gram equals 1,000 milligrams, so the conversion is a single multiplication.

mg = g × 1,000

Example: 150 g × 1,000 = 150,000 mg.

About the gram

Gram (g)

One gram is a thousandth of a kilogram. It's the standard unit on nutrition labels and kitchen scales outside the US.

1 gram in every weight unit

Pounds0.002205 lb Kilograms0.001 kg Ounces0.03527 oz

Stone0.0001575 st

Milligrams1,000 mg

Metric Tons0.000001 t

Short Tons (US)0.000001102 ton

Long Tons (UK)9.842e-7 LT

Carats5 ct

Grains15.432 gr

Troy Ounces0.03215 oz t

Troy Pounds0.002679 lb t

Pennyweights0.643 dwt

Micrograms1,000,000 µg

Slugs0.00006852 slug

Hundredweight (US)0.00002205 US cwt

Hundredweight (UK)0.00001968 UK cwt

mg to GramsReverse conversion Grams to oz1 g = 0.03527 oz oz to Grams1 oz = 28.3495 g Grams to lbs1 g = 0.002205 lb lbs to Grams1 lb = 453.5924 g kg to Grams1 kg = 1,000 g Grams to kg1 g = 0.001 kg Carats to Grams1 ct = 0.2 g Grams to Carats1 g = 5 ct Troy oz to Grams1 oz t = 31.1035 g Grams to Troy oz1 g = 0.03215 oz t mcg to mg1 µg = 0.001 mg

Quick answers

How many ounces in a pound?16 ounces How many grams in an ounce?28.35 grams How many pounds in a ton?2,000 pounds

Grams to mg FAQ

How many milligrams are in a gram?

1 gram = 1,000 milligrams.

How many grams are in a milligram?

1 milligram = 0.001 grams.

How do I convert g to mg?

Use mg = g × 1,000. For example, 10 g = 10,000 mg.

Can I print this Grams to mg chart?

Yes. Use "Print / Save PDF" next to the converter for a one-page chart, or "Download CSV" to open it in Excel or Google Sheets.