At One Place

Grains to ounces

1 grain in ounces
1 gr = 0.0022857 oz
oz = gr × 0.002285714286

To convert grains to ounces, multiply by 0.002285714286. The table below gives the values people look up most often, and the converter works for any number.

Grains to ounces table

Common grain values converted to ounces.
Grains Ounces
1 gr 0.0022857
2 gr 0.0045714
3 gr 0.0068571
4 gr 0.0091429
5 gr 0.011429
10 gr 0.022857
15 gr 0.034286
20 gr 0.045714
25 gr 0.057143
30 gr 0.068571
40 gr 0.091429
50 gr 0.11429
75 gr 0.17143
100 gr 0.22857
250 gr 0.57143
500 gr 1.142857
1,000 gr 2.285714

How the conversion works

The relationship is oz = gr × 0.002285714286. Both units measure mass, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

Common questions

How many ounces are in one grain?
One grain equals 0.0022857 ounces. oz = gr × 0.002285714286.
How do you convert grains to ounces?
Use oz = gr × 0.002285714286. So 10 gr is 0.022857 oz.
How many grains are in one ounce?
One ounce equals 437.5 grains, which is the reverse of the conversion above.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked