Conversion from Grain (gr) to Milligram (mg) and vice versa

Updated on by Stefan Banse

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 (gr) to Milligram (mg)

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 (mg) to Grain (gr)

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 => 0.64798 mg
0.02 gr => 1.29597 mg
0.03 gr => 1.94396 mg
0.04 gr => 2.59195 mg
0.05 gr => 3.23994 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
0.10 gr => 6.47989 mg
0.20 gr => 12.95978 mg
0.30 gr => 19.43967 mg
0.40 gr => 25.91956 mg
0.50 gr => 32.39945 mg
0.60 gr => 38.87934 mg
0.70 gr => 45.35923 mg
0.80 gr => 51.83912 mg
0.90 gr => 58.31901 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
1 000 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 => 0.00030 gr
0.03 mg => 0.00046 gr
0.04 mg => 0.00061 gr
0.05 mg => 0.00077 gr
0.06 mg => 0.00092 gr
0.07 mg => 0.00108 gr
0.08 mg => 0.00123 gr
0.09 mg => 0.00138 gr
0.10 mg => 0.00154 gr
0.20 mg => 0.00308 gr
0.30 mg => 0.00463 gr
0.40 mg => 0.00617 gr
0.50 mg => 0.00771 gr
0.60 mg => 0.00925 gr
0.70 mg => 0.01080 gr
0.80 mg => 0.01234 gr
0.90 mg => 0.01388 gr
1 mg => 0.01543 gr
2 mg => 0.03086 gr
3 mg => 0.04629 gr
4 mg => 0.06172 gr
5 mg => 0.07716 gr
6 mg => 0.09259 gr
7 mg => 0.10802 gr
8 mg => 0.12345 gr
9 mg => 0.13889 gr
10 mg => 0.15432 gr
20 mg => 0.30864 gr
30 mg => 0.46297 gr
40 mg => 0.61729 gr
50 mg => 0.77161 gr
60 mg => 0.92594 gr
70 mg => 1.08026 gr
80 mg => 1.23458 gr
90 mg => 1.38891 gr
100 mg => 1.54323 gr
200 mg => 3.08647 gr
300 mg => 4.62970 gr
400 mg => 6.17294 gr
500 mg => 7.71617 gr
600 mg => 9.25941 gr
700 mg => 10.80265 gr
800 mg => 12.34588 gr
900 mg => 13.88912 gr
1 000 mg => 15.43235 gr

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
  • Editorial revision of all texts in this category