Convert Grams to Milligrams

Enter your gram value in the form below to get the value calculated in milligrams.

Results in Milligrams:

1 g = 1,000 mg

How to Convert Grams to Milligrams

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Convert grams to milligrams with this simple formula:

milligrams = grams × 1,000

Converting a gram weight measurement to a milligram measurement involves multiplying the weight by the conversion ratio to find the result. One gram is equal to 1,000 milligrams, so to convert simply multiply by 1,000.

For example:

5 g = (5 × 1,000) = 5,000 mg

Grams and milligrams are both units used to measure weight. Learn more about weight and find more weight measurement conversion calculators. Grams are a metric measurement and can be abbreviated as g, for example 1 g. Milligrams are a metric measurement and can be abbreviated as mg, for example 1 mg. Learn more about the metric system, including the common unit prefixes and how to convert between metric units.

grams and milligrams are units used to measure weight

Convert Milligrams to Grams

Gram Measurements and Equivalent Milligram Conversions

Common gram values converted to the equivalent milligram value
Grams	Milligrams
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
11 g	11,000 mg
12 g	12,000 mg
13 g	13,000 mg
14 g	14,000 mg
15 g	15,000 mg
16 g	16,000 mg
17 g	17,000 mg
18 g	18,000 mg
19 g	19,000 mg
20 g	20,000 mg
21 g	21,000 mg
22 g	22,000 mg
23 g	23,000 mg
24 g	24,000 mg
25 g	25,000 mg
26 g	26,000 mg
27 g	27,000 mg
28 g	28,000 mg
29 g	29,000 mg
30 g	30,000 mg
31 g	31,000 mg
32 g	32,000 mg
33 g	33,000 mg
34 g	34,000 mg
35 g	35,000 mg
36 g	36,000 mg
37 g	37,000 mg
38 g	38,000 mg
39 g	39,000 mg
40 g	40,000 mg