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MG to Grams Converter

A quick two-way mg ⇄ g converter: type in either box, choose how many decimals you want and copy the answer with one click.

MilligramsFrom

GramsTo

Decimal places

Step-by-step calculation

How to use the MG to Grams Converter

Type a value in the Milligrams box. The grams result appears instantly.
Going the other way? Type in the Grams box, or press the ⇄ swap button.
Set the precision with the decimal places menu.
Check the working in the step-by-step box, then press Copy result or click any row in the tables below.

Milligrams to grams formula

g = mg ÷ 1000

Take the value in milligrams.
Divide it by 1000 (the number of milligrams in one gram).

Example: 500 mg ÷ 1000 = 0.5 g.

Reverse formula (grams to milligrams): mg = g × 1000. Example: 0.25 g × 1000 = 250 mg.

The factor is a whole number (1000), so this one is easy to do in your head or with long division.

mg to g conversion table (1–100)

Click any row to load it into the converter.

Milligrams to grams

Milligrams	Grams
1 mg	0.001 g
2 mg	0.002 g
3 mg	0.003 g
4 mg	0.004 g
5 mg	0.005 g
6 mg	0.006 g
7 mg	0.007 g
8 mg	0.008 g
9 mg	0.009 g
10 mg	0.01 g
11 mg	0.011 g
12 mg	0.012 g
13 mg	0.013 g
14 mg	0.014 g
15 mg	0.015 g
16 mg	0.016 g
17 mg	0.017 g
18 mg	0.018 g
19 mg	0.019 g
20 mg	0.02 g
21 mg	0.021 g
22 mg	0.022 g
23 mg	0.023 g
24 mg	0.024 g
25 mg	0.025 g
26 mg	0.026 g
27 mg	0.027 g
28 mg	0.028 g
29 mg	0.029 g
30 mg	0.03 g
31 mg	0.031 g
32 mg	0.032 g
33 mg	0.033 g
34 mg	0.034 g
35 mg	0.035 g
36 mg	0.036 g
37 mg	0.037 g
38 mg	0.038 g
39 mg	0.039 g
40 mg	0.04 g
41 mg	0.041 g
42 mg	0.042 g
43 mg	0.043 g
44 mg	0.044 g
45 mg	0.045 g
46 mg	0.046 g
47 mg	0.047 g
48 mg	0.048 g
49 mg	0.049 g
50 mg	0.05 g
51 mg	0.051 g
52 mg	0.052 g
53 mg	0.053 g
54 mg	0.054 g
55 mg	0.055 g
56 mg	0.056 g
57 mg	0.057 g
58 mg	0.058 g
59 mg	0.059 g
60 mg	0.06 g
61 mg	0.061 g
62 mg	0.062 g
63 mg	0.063 g
64 mg	0.064 g
65 mg	0.065 g
66 mg	0.066 g
67 mg	0.067 g
68 mg	0.068 g
69 mg	0.069 g
70 mg	0.07 g
71 mg	0.071 g
72 mg	0.072 g
73 mg	0.073 g
74 mg	0.074 g
75 mg	0.075 g
76 mg	0.076 g
77 mg	0.077 g
78 mg	0.078 g
79 mg	0.079 g
80 mg	0.08 g
81 mg	0.081 g
82 mg	0.082 g
83 mg	0.083 g
84 mg	0.084 g
85 mg	0.085 g
86 mg	0.086 g
87 mg	0.087 g
88 mg	0.088 g
89 mg	0.089 g
90 mg	0.09 g
91 mg	0.091 g
92 mg	0.092 g
93 mg	0.093 g
94 mg	0.094 g
95 mg	0.095 g
96 mg	0.096 g
97 mg	0.097 g
98 mg	0.098 g
99 mg	0.099 g
100 mg	0.1 g

Grams to milligrams

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
41 g	41,000 mg
42 g	42,000 mg
43 g	43,000 mg
44 g	44,000 mg
45 g	45,000 mg
46 g	46,000 mg
47 g	47,000 mg
48 g	48,000 mg
49 g	49,000 mg
50 g	50,000 mg
51 g	51,000 mg
52 g	52,000 mg
53 g	53,000 mg
54 g	54,000 mg
55 g	55,000 mg
56 g	56,000 mg
57 g	57,000 mg
58 g	58,000 mg
59 g	59,000 mg
60 g	60,000 mg
61 g	61,000 mg
62 g	62,000 mg
63 g	63,000 mg
64 g	64,000 mg
65 g	65,000 mg
66 g	66,000 mg
67 g	67,000 mg
68 g	68,000 mg
69 g	69,000 mg
70 g	70,000 mg
71 g	71,000 mg
72 g	72,000 mg
73 g	73,000 mg
74 g	74,000 mg
75 g	75,000 mg
76 g	76,000 mg
77 g	77,000 mg
78 g	78,000 mg
79 g	79,000 mg
80 g	80,000 mg
81 g	81,000 mg
82 g	82,000 mg
83 g	83,000 mg
84 g	84,000 mg
85 g	85,000 mg
86 g	86,000 mg
87 g	87,000 mg
88 g	88,000 mg
89 g	89,000 mg
90 g	90,000 mg
91 g	91,000 mg
92 g	92,000 mg
93 g	93,000 mg
94 g	94,000 mg
95 g	95,000 mg
96 g	96,000 mg
97 g	97,000 mg
98 g	98,000 mg
99 g	99,000 mg
100 g	100,000 mg

Common values

Milligrams	Grams	Example
1 mg	0.001 g	1 mg
10 mg	0.01 g	10 mg
50 mg	0.05 g	50 mg
100 mg	0.1 g	100 mg
200 mg	0.2 g	200 mg
250 mg	0.25 g	250 mg
325 mg	0.33 g	325 mg
500 mg	0.5 g	500 mg
1,000 mg	1 g	1,000 mg
2,300 mg	2.3 g	Daily sodium limit (US guideline)

About milligrams and grams

Milligrams (mg). The milligram is one thousandth of a gram. It is used for nutrients, supplements and medicine strengths.

Grams (g). The gram is a metric mass unit, one thousandth of a kilogram. Food labels, recipes and small items are usually weighed in grams.

Frequently asked questions

1 milligram equals how many grams?

One milligram equals 0.001 grams. Looking at it the other way, one gram is 1,000 milligrams.

How do you convert milligrams to grams?

Divide the number of milligrams by 1000. For example, 500 mg ÷ 1000 = 0.5 g.

What is 250 milligrams in grams?

250 mg is 0.25 g.

How much is 1,000 milligrams in grams?

1,000 milligrams equals 1 grams.

How do I convert grams back to milligrams?

Multiply by 1000, or press the ⇄ swap button above. For example, 0.25 g × 1000 = 250 mg.

What does mcg mean on a label?

mcg (also written µg) means microgram, one millionth of a gram. 1 mg = 1,000 mcg. Some vitamin labels also use IU, which depends on the vitamin, so use the label's own mcg value when you have it.

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