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Conversion from grain (gr) to milligram (mg) and vice versa

Updated on by Stefan Banse
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Weight converter

Our weight converter enables the conversion of all common international units of weight. After entering the corresponding weight, you can simply convert the corresponding value into any other unit.

Here you can convert the unit of weight grain into the unit milligram and vice versa you can convert milligram into grain. By clicking the "Swap units" icon, you will always obtain the desired conversion in the calculation result, i.e., gr to mg or mg to gr.

With the following calculator you can also calculate any other unit of weight.


Info about grain

The grain is the smallest classical English unit of mass. The usual pound contains 7 000 grains.

1 grain = 64.79891 mg

1 gram = 15.43236 grain

The unit is increasingly replaced by milligrams or carats. Grain, however, is still used for hand gun bullets, arrowheads or ammunition powder.

Info about milligram

The unit milligram belongs to the metric system and is derived from the base unit kilogram. 1 kilogram is equivalent to one million milligrams, and 1 milligram is equivalent to one millionth of a kilogram.

The milligram is defined in national systems of units and standards according to the conversion into kilograms.

Basis for conversion grain (gr) to milligram (mg)

The abbreviation for the unit of weight grain is gr. The abbreviation for the unit of weight milligram is mg.

Formula for the conversion of grain to milligram

The calculation from grain to milligram shall be made using the following conversion formula:

 Conversion formula grain to milligram 

Determine the number of milligram from grain

grain × 64.79891


Formula for the conversion of milligram to grain

The calculation from milligram to grain shall be made using the following conversion formula:

 Conversion formula milligram to grain 

Determine the number of grain from milligram

milligram × 0.015432358352941


Overview table: How many grain are how many milligram?

grain grmilligram mg
0.01 gr => 0.64799 mg
0.02 gr => 1.29598 mg
0.03 gr => 1.94397 mg
0.04 gr => 2.59196 mg
0.05 gr => 3.23995 mg
0.06 gr => 3.88793 mg
0.07 gr => 4.53592 mg
0.08 gr => 5.18391 mg
0.09 gr => 5.83190 mg
0.1 gr => 6.47989 mg
0.2 gr => 12.95978 mg
0.3 gr => 19.43967 mg
0.4 gr => 25.91956 mg
0.5 gr => 32.39946 mg
0.6 gr => 38.87935 mg
0.7 gr => 45.35924 mg
0.8 gr => 51.83913 mg
0.9 gr => 58.31902 mg
1 gr => 64.79891 mg
2 gr => 129.59782 mg
3 gr => 194.39673 mg
4 gr => 259.19564 mg
5 gr => 323.99455 mg
6 gr => 388.79346 mg
7 gr => 453.59237 mg
8 gr => 518.39128 mg
9 gr => 583.19019 mg
10 gr => 647.98910 mg
20 gr => 1 295.97820 mg
30 gr => 1 943.96730 mg
40 gr => 2 591.95640 mg
50 gr => 3 239.94550 mg
60 gr => 3 887.93460 mg
70 gr => 4 535.92370 mg
80 gr => 5 183.91280 mg
90 gr => 5 831.90190 mg
100 gr => 6 479.89100 mg
200 gr => 12 959.78200 mg
300 gr => 19 439.67300 mg
400 gr => 25 919.56400 mg
500 gr => 32 399.45500 mg
600 gr => 38 879.34600 mg
700 gr => 45 359.23700 mg
800 gr => 51 839.12800 mg
900 gr => 58 319.01900 mg
1000 gr => 64 798.91000 mg

Overview table: How many milligram are how many grain?

milligram mggrain gr
0.01 mg => 0.00015 gr
0.02 mg => 0.00031 gr
0.03 mg => 0.00046 gr
0.04 mg => 0.00062 gr
0.05 mg => 0.00077 gr
0.06 mg => 0.00093 gr
0.07 mg => 0.00108 gr
0.08 mg => 0.00123 gr
0.09 mg => 0.00139 gr
0.1 mg => 0.00154 gr
0.2 mg => 0.00309 gr
0.3 mg => 0.00463 gr
0.4 mg => 0.00617 gr
0.5 mg => 0.00772 gr
0.6 mg => 0.00926 gr
0.7 mg => 0.01080 gr
0.8 mg => 0.01235 gr
0.9 mg => 0.01389 gr
1 mg => 0.01543 gr
2 mg => 0.03086 gr
3 mg => 0.04630 gr
4 mg => 0.06173 gr
5 mg => 0.07716 gr
6 mg => 0.09259 gr
7 mg => 0.10803 gr
8 mg => 0.12346 gr
9 mg => 0.13889 gr
10 mg => 0.15432 gr
20 mg => 0.30865 gr
30 mg => 0.46297 gr
40 mg => 0.61729 gr
50 mg => 0.77162 gr
60 mg => 0.92594 gr
70 mg => 1.08027 gr
80 mg => 1.23459 gr
90 mg => 1.38891 gr
100 mg => 1.54324 gr
200 mg => 3.08647 gr
300 mg => 4.62971 gr
400 mg => 6.17294 gr
500 mg => 7.71618 gr
600 mg => 9.25942 gr
700 mg => 10.80265 gr
800 mg => 12.34589 gr
900 mg => 13.88912 gr
1000 mg => 15.43236 gr

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Source information

As source for the information in the "Units of weight" category, we have used in particular:

Last update on June 25, 2020

The last changes in the "Units of weight" category were implemented by Stefan Banse on June 25, 2020. The main changes were:

  • Publication of the Weight converter
  • Creation of the texts for the corresponding pages
  • Editorial revision of all texts in this category