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Conversion from grain (gr) to ounce (oz) 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 ounce and vice versa you can convert ounce into grain. By clicking the "Swap units" icon, you will always obtain the desired conversion in the calculation result, i.e., gr to oz or oz 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 ounce

The common ounce (English: international avoirdupois ounce) as unit of weight is very common in the Anglo-American area but does not belong to the International System of Units (Système international d'unités). It should not be confused with the troy ounce or apothecaries ounce and is frequently used in many countries to indicate the weight of foods.

One ounce is equivalent to 28.349523125 grams, and one gram is equivalent to 0.035273961 ounces.

Basis for conversion grain (gr) to ounce (oz)

The abbreviation for the unit of weight grain is gr. The abbreviation for the unit of weight ounce is oz.

Formula for the conversion of grain to ounce

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

 Conversion formula grain to ounce 

Determine the number of ounce from grain

grain × 0.0022857142857143


Formula for the conversion of ounce to grain

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

 Conversion formula ounce to grain 

Determine the number of grain from ounce

ounce × 437.5


Overview table: How many grain are how many ounce?

grain grounce oz
0.01 gr => 0.00002 oz
0.02 gr => 0.00005 oz
0.03 gr => 0.00007 oz
0.04 gr => 0.00009 oz
0.05 gr => 0.00011 oz
0.06 gr => 0.00014 oz
0.07 gr => 0.00016 oz
0.08 gr => 0.00018 oz
0.09 gr => 0.00021 oz
0.1 gr => 0.00023 oz
0.2 gr => 0.00046 oz
0.3 gr => 0.00069 oz
0.4 gr => 0.00091 oz
0.5 gr => 0.00114 oz
0.6 gr => 0.00137 oz
0.7 gr => 0.00160 oz
0.8 gr => 0.00183 oz
0.9 gr => 0.00206 oz
1 gr => 0.00229 oz
2 gr => 0.00457 oz
3 gr => 0.00686 oz
4 gr => 0.00914 oz
5 gr => 0.01143 oz
6 gr => 0.01371 oz
7 gr => 0.01600 oz
8 gr => 0.01829 oz
9 gr => 0.02057 oz
10 gr => 0.02286 oz
20 gr => 0.04571 oz
30 gr => 0.06857 oz
40 gr => 0.09143 oz
50 gr => 0.11429 oz
60 gr => 0.13714 oz
70 gr => 0.16000 oz
80 gr => 0.18286 oz
90 gr => 0.20571 oz
100 gr => 0.22857 oz
200 gr => 0.45714 oz
300 gr => 0.68571 oz
400 gr => 0.91429 oz
500 gr => 1.14286 oz
600 gr => 1.37143 oz
700 gr => 1.60000 oz
800 gr => 1.82857 oz
900 gr => 2.05714 oz
1000 gr => 2.28571 oz

Overview table: How many ounce are how many grain?

ounce ozgrain gr
0.01 oz => 4.37500 gr
0.02 oz => 8.75000 gr
0.03 oz => 13.12500 gr
0.04 oz => 17.50000 gr
0.05 oz => 21.87500 gr
0.06 oz => 26.25000 gr
0.07 oz => 30.62500 gr
0.08 oz => 35.00000 gr
0.09 oz => 39.37500 gr
0.1 oz => 43.75000 gr
0.2 oz => 87.50000 gr
0.3 oz => 131.25000 gr
0.4 oz => 175.00000 gr
0.5 oz => 218.75000 gr
0.6 oz => 262.50000 gr
0.7 oz => 306.25000 gr
0.8 oz => 350.00000 gr
0.9 oz => 393.75000 gr
1 oz => 437.50000 gr
2 oz => 875.00000 gr
3 oz => 1 312.50000 gr
4 oz => 1 750.00000 gr
5 oz => 2 187.50000 gr
6 oz => 2 625.00000 gr
7 oz => 3 062.50000 gr
8 oz => 3 500.00000 gr
9 oz => 3 937.50000 gr
10 oz => 4 375.00000 gr
20 oz => 8 750.00000 gr
30 oz => 13 125.00000 gr
40 oz => 17 500.00000 gr
50 oz => 21 875.00000 gr
60 oz => 26 250.00000 gr
70 oz => 30 625.00000 gr
80 oz => 35 000.00000 gr
90 oz => 39 375.00000 gr
100 oz => 43 750.00000 gr
200 oz => 87 500.00000 gr
300 oz => 131 250.00000 gr
400 oz => 175 000.00000 gr
500 oz => 218 750.00000 gr
600 oz => 262 500.00000 gr
700 oz => 306 250.00000 gr
800 oz => 350 000.00000 gr
900 oz => 393 750.00000 gr
1000 oz => 437 500.00000 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