Grains to Ounces Converter

1 grain (gr) equals 0.002285714286 ounces (oz).

Quick answer

  • 1 grain = 0.002285714286 ounces
  • 1 ounce = 437.5 grains
  • Formula: oz = gr ÷ 437.5

1 grain = 0.002285714286 ounces

How to convert grains to ounces

oz = gr ÷ 437.5

To convert grains to ounces, divide the number of grains by 437.5.

Example: 18 gr to oz

  1. Start with the value in grains: 18 gr.
  2. Divide by 437.5: 18 ÷ 437.5 = 0.04114285714.
  3. Result: 18 grains = 0.04114285714 ounces.

Going the other way, 1 ounce = 437.5 grains, so to convert ounces back to grains you multiply by the same number. See ounces to grains.

Grains to ounces conversion table

Grains (gr)Ounces (oz)
0.25 gr 0.000571428571 oz
0.5 gr 0.001142857143 oz
0.75 gr 0.001714285714 oz
1 gr 0.002285714286 oz
1.5 gr 0.003428571429 oz
2 gr 0.004571428571 oz
2.5 gr 0.005714285714 oz
3 gr 0.006857142857 oz
4 gr 0.009142857143 oz
5 gr 0.01142857143 oz
6 gr 0.01371428571 oz
7 gr 0.016 oz
8 gr 0.01828571429 oz
9 gr 0.02057142857 oz
10 gr 0.02285714286 oz
11 gr 0.02514285714 oz
12 gr 0.02742857143 oz
13 gr 0.02971428571 oz
14 gr 0.032 oz
15 gr 0.03428571429 oz
16 gr 0.03657142857 oz
17 gr 0.03885714286 oz
18 gr 0.04114285714 oz
19 gr 0.04342857143 oz
20 gr 0.04571428571 oz
21 gr 0.048 oz
22 gr 0.05028571429 oz
23 gr 0.05257142857 oz
24 gr 0.05485714286 oz
25 gr 0.05714285714 oz
26 gr 0.05942857143 oz
27 gr 0.06171428571 oz
28 gr 0.064 oz
29 gr 0.06628571429 oz
30 gr 0.06857142857 oz
31 gr 0.07085714286 oz
32 gr 0.07314285714 oz
33 gr 0.07542857143 oz
34 gr 0.07771428571 oz
35 gr 0.08 oz

More gr to oz values

What is a grain?

The grain is the smallest unit in the avoirdupois, troy and apothecaries' systems, and it is the same in all three: exactly 64.79891 milligrams.

More about grains →

What is an ounce?

The ounce (avoirdupois ounce) is a unit of mass equal to one sixteenth of a pound, exactly 28.349523125 grams.

More about ounces →

Convert grains to other units

Convert other units to ounces

Frequently asked questions

How many ounces are in a grain?

One grain is 0.002285714286 ounces.

How many grains are in an ounce?

One ounce is 437.5 grains.

What is the formula to convert grains to ounces?

oz = gr ÷ 437.5.