Grains (gr) to Ounces (oz) calculator

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


Formula used to convert gr to oz:

F(x) = x / 437.5

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

15 gr = 15/437.5 = 0.03428571428571429 oz


  1. Divide the amount of grains by 437.5.
  2. The result will be expressed in ounces.

Grain to Ounce Conversion Table

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

Grains (gr) Ounces (oz)
0.001 gr 0.0000022857 oz
0.01 gr 0.0000228571 oz
0.1 gr 0.0002285714 oz
1 gr 0.0022857143 oz
2 gr 0.0045714286 oz
3 gr 0.0068571429 oz
4 gr 0.0091428571 oz
5 gr 0.0114285714 oz
6 gr 0.0137142857 oz
7 gr 0.016 oz
8 gr 0.0182857143 oz
9 gr 0.0205714286 oz
10 gr 0.0228571429 oz
20 gr 0.0457142857 oz
30 gr 0.0685714286 oz
40 gr 0.0914285714 oz
50 gr 0.1142857143 oz
60 gr 0.1371428571 oz
70 gr 0.16 oz
80 gr 0.1828571429 oz
90 gr 0.2057142857 oz
100 gr 0.2285714286 oz

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.

About Ounces (oz)

The ounce (symbol ℥) is a unit of mass, weight, or volume used in most British derived customary systems of measurement. One avoirdupois ounce is equal to ​1⁄16 of a common avoirdupois pound. It is commonly used in the United States to measure the weight of food, postal items, gloves, among others.

There are many ounces in current use. This are the troy ounce, the ounce-force and the fluid ounce.

See also

FAQs for Grain to Ounce calculator

What is Grain to Ounce calculator?

Grain to Ounce is a free and online calculator that converts Grains to Ounces.

How do I use Grain to Ounce?

You just have to insert the amount of Grains you want to convert and press the "Convert" button. The amount of Ounces 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 Grain to Ounce work on?

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