Convert Grains To Ounces

Please enter a value below to convert grains to ounces:

In order to do a reverse conversion from ounces to grains clear values in the above fields and input the value in the “Ounces” field or go to ounces to grains converter page.

Facts about Grain

Basic facts: A grain is an archaic unit of measurement of mass. In the avoirdupois, troy weight, and apothecaries’ system it is equivalent to precisely 64.79891 milligrams. Nominally it is based on the mass of a single ideal seed of a cereal.

This unit of measure was the legal foundation of traditional English weight systems and is the only unit that is equivalent throughout the avoirdupois, troy, and apothecaries’ systems of mass. The grain was based on the weight of a single grain of barley, assumed to be equivalent to 1+1/3 grains of wheat.

History: On the 1st of July 1959, since the implementation of the international yard and pound agreement of the grain or troy grain, which symbol is [gr], the measure has been defined in terms of units of mass in the International System of Units as exactly 64.79891 milligrams. One gram is therefore around 15.43236 grains.

Use: The grain is generally used to measure the mass of propellants and bullets. The grain is the standard unit used to weigh arrows in archery. In the US the hardness of water is often measured in grains per US gallon [gpg] of equivalents to calcium carbonate.

Facts about Ounce

Basic facts: An ounce is a unit of mass in the US customary and imperial systems of measurement. Its symbol is [oz]. The avoirdupois ounce, which is the common ounce, is defined as precisely 28.349523125 grams and is equal to one-sixteenth of an avoirdupois pound.

History: The term ounce originates from the Roman uncia, which means a [twelfth part] and the use of a standardized copper bar which defined the Roman pound as well as the foot. The copper bar was divided into twelve identical parts, called unciae. This relationship between the Roman pound and foot ultimately contributed to the uncia being the basis of both the modern inch and the common ounce. Throughout history, the ounce has been used as a standard of mass for various applications and with different definitions. Examples include the French ounce (30.59g), Spanish ounce (28.75g), and the Dutch metric ounce (100g) among others. In 1959, the current definition of the ounce, the international avoirdupois ounce was adopted.

Use: In the US customary system of measurement, an ounce is still a standard unit of mass. It is mainly used in the United States for food portions, measuring packaged food products, and postal items, among other things. In some other countries around the world that have roots in British history and culture, the ounce is still used. The United Kingdom no longer officially uses the ounce due to metrication. It is, however, still used in some settings (restaurants) in the United Kingdom.

How many ounces in a grain? 

1 grain is equivalent to 0.0022857143 ounces. Use 0.0022857143 as the factor to convert grains to ounces. Below find some popular grains to ounces conversion questions:

• How many ounces in 2 grains?  2 grains x 0.0022857143 = 0.0045714286 number ounces
• How many ounces in 3 grains?  3 grains x 0.0022857143 = 0.0068571429 number ounces
• How many ounces in 5 grains?  5 grains x 0.0022857143 = 0.0114285715 number ounces
• How many ounces in 10 grains? 10 grains x 0.0022857143 = 0.022857143 number ounces
• How many ounces in 20 grains? 20 grains x 0.0022857143 = 0.045714286 number ounces
• How many ounces in 50 grains? 50 grains x 0.0022857143 = 0.114285715 number ounces
• How many ounces in 100 grains? 100 grains x 0.0022857143 = 0.22857143 number ounces
• How many ounces in 1000 grains? 1000 grains x 0.0022857143 = 2.2857143 number ounces

Grains to Ounces Conversion Chart

Grains	Ounces	Grains	Ounces	Grains	Ounces	Grains	Ounces
1	0.0022857143	26	0.0594285718	51	0.1165714293	76	0.1737142868
2	0.0045714286	27	0.0617142861	52	0.1188571436	77	0.1760000011
3	0.0068571429	28	0.0640000004	53	0.1211428579	78	0.1782857154
4	0.0091428572	29	0.0662857147	54	0.1234285722	79	0.1805714297
5	0.0114285715	30	0.068571429	55	0.1257142865	80	0.182857144
6	0.0137142858	31	0.0708571433	56	0.1280000008	81	0.1851428583
7	0.0160000001	32	0.0731428576	57	0.1302857151	82	0.1874285726
8	0.0182857144	33	0.0754285719	58	0.1325714294	83	0.1897142869
9	0.0205714287	34	0.0777142862	59	0.1348571437	84	0.1920000012
10	0.022857143	35	0.0800000005	60	0.137142858	85	0.1942857155
11	0.0251428573	36	0.0822857148	61	0.1394285723	86	0.1965714298
12	0.0274285716	37	0.0845714291	62	0.1417142866	87	0.1988571441
13	0.0297142859	38	0.0868571434	63	0.1440000009	88	0.2011428584
14	0.0320000002	39	0.0891428577	64	0.1462857152	89	0.2034285727
15	0.0342857145	40	0.091428572	65	0.1485714295	90	0.205714287
16	0.0365714288	41	0.0937142863	66	0.1508571438	91	0.2080000013
17	0.0388571431	42	0.0960000006	67	0.1531428581	92	0.2102857156
18	0.0411428574	43	0.0982857149	68	0.1554285724	93	0.2125714299
19	0.0434285717	44	0.1005714292	69	0.1577142867	94	0.2148571442
20	0.045714286	45	0.1028571435	70	0.160000001	95	0.2171428585
21	0.0480000003	46	0.1051428578	71	0.1622857153	96	0.2194285728
22	0.0502857146	47	0.1074285721	72	0.1645714296	97	0.2217142871
23	0.0525714289	48	0.1097142864	73	0.1668571439	98	0.2240000014
24	0.0548571432	49	0.1120000007	74	0.1691428582	99	0.2262857157
25	0.0571428575	50	0.114285715	75	0.1714285725	100	0.22857143

Convert grains to other volume units

• Convert Grains to Grams