Milligrams (mg) to Grains (gr) calculator

Input the amount of milligrams you want to convert to grains in the below input field, and then click in the "Convert" button. But if you want to convert from grains to milligrams, please checkout this tool.


Formula used to convert mg to gr:

F(x) = x / 64.79891

For example, if you want to convert 15 mg to gr, just replace x by 15 [mg]:

15 mg = 15/64.79891 = 0.23148537529412144 gr


  1. Divide the amount of milligrams by 64.79891.
  2. The result will be expressed in grains.

Milligram to Grain Conversion Table

The following table will show the most common conversions for Milligrams (mg) to Grains (gr):

Milligrams (mg) Grains (gr)
0.001 mg 0.0000154324 gr
0.01 mg 0.0001543236 gr
0.1 mg 0.0015432358 gr
1 mg 0.0154323584 gr
2 mg 0.0308647167 gr
3 mg 0.0462970751 gr
4 mg 0.0617294334 gr
5 mg 0.0771617918 gr
6 mg 0.0925941501 gr
7 mg 0.1080265085 gr
8 mg 0.1234588668 gr
9 mg 0.1388912252 gr
10 mg 0.1543235835 gr
20 mg 0.3086471671 gr
30 mg 0.4629707506 gr
40 mg 0.6172943341 gr
50 mg 0.7716179176 gr
60 mg 0.9259415012 gr
70 mg 1.0802650847 gr
80 mg 1.2345886682 gr
90 mg 1.3889122518 gr
100 mg 1.5432358353 gr

About Milligrams (mg)

A milligram is a unit of weight that is based on the International System of Units. The symbol used to represent the milligram is mg. One milligram is equal to 1/1,000 grams, or 1/1,000,000 kilograms. Is often used to measure weight or mass of food, vitamins, minerals and more.

About Grains (gr)

A grain is a unit of mass, equal to exactly 64.79891 milligrams (independently of the type of pound used). It is nominally based upon the mass of a single virtual ideal seed of a cereal. The symbol used to define grains is gr.

See also

FAQs for Milligram to Grain calculator

What is Milligram to Grain calculator?

Milligram to Grain is a free and online calculator that converts Milligrams to Grains.

How do I use Milligram to Grain?

You just have to insert the amount of Milligrams you want to convert and press the "Convert" button. The amount of Grains will be outputed in the input field below the button.

Which browsers are supported?

All mayor web browsers are supported, including Internet Explorer, Microsoft Edge, Firefox, Chrome, Safari and Opera.

Which devices does Milligram to Grain work on?

Milligram to Grain calculator works in any device that supports any of the browsers mentioned before. It can be a smartphone, desktop computer, notebook, tablet, etc.