Milligrams and grams (mg and g) converter

Use this calculator tool to convert between milligrams and grams (mg to g), both of which are units of weight. Tables of conversion information and formulae are also available further down the page.


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How many mg are there in a gram?

1g = 1,000mg. As there are 1,000 milligrams (mg) in 1 gram (g), to convert your gram figure to milligrams you should multiply your figure by 1000.

How many grams are there in a mg?

1mg is 1/1000g. In order to get your answer, simply divide your figure by 1,000.

Milligrams and grams conversion charts

The chart below shows common conversion figures for milligrams and grams.

Conversion of mg to grams
Milligrams Grams Milligrams Grams
1 mg 0.001 g 10 mg 0.01 g
2 mg 0.002 g 20 mg 0.02 g
3 mg 0.003 g 30 mg 0.03 g
4 mg 0.004 g 40 mg 0.04 g
5 mg 0.005 g 50 mg 0.05 g
6 mg 0.006 g 60 mg 0.06 g
7 mg 0.007 g 70 mg 0.07 g
8 mg 0.008 g 80 mg 0.08 g
9 mg 0.009 g 90 mg 0.09 g
10 mg 0.01 g 100 mg 0.1 g
Conversion of grams to mg
Grams Milligrams Grams Milligrams
1 g 1000 mg 10 g 10000 mg
2 g 2000 mg 20 g 20000 mg
3 g 3000 mg 30 g 30000 mg
4 g 4000 mg 40 g 40000 mg
5 g 5000 mg 50 g 50000 mg
6 g 6000 mg 60 g 60000 mg
7 g 7000 mg 70 g 70000 mg
8 g 8000 mg 80 g 80000 mg
9 g 9000 mg 90 g 90000 mg
10 g 10000 mg 100 g 100000 mg

You can use the converters to find the answers to your questions. To do this, simply select the appropriate unit from each 'select' box above, enter your figure (x) into the 'value to convert' box and click the 'Convert!' button.

If you wish to convert between micrograms and milligrams, you can do so with the mcg to mg converter. Alternatively, you can convert between micrograms and grams here.

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