An ounce is a unit of mass, volume, or force. In the weight calculation it is usually avoirdupois ounce which is about 28.3495 grams. Another frequently used unit is troy ounce, which is used to express the mass of precious metals. Its value is approximately 31.1035 grams. Ounces belong to imperial units.
Avoirdupois ounce is used for example in food, mail, etc. In turn troy ounce in precious metals. The converter, after entering a value, shows the results for both Avoirdupois ounce and troy ounce.
Calculating the value of an ounce
It is difficult to get an accurate result from ounces to grams because grams are metric and ounces are imperial. By definition, 1 Avoirdupois ounce is known to be 1/16 avoirdupois pound and 437.5 grains. While troy ounce is 480 grains.
The ounce is commonly used in the United States. In recent years, its importance has decreased due to Great Britain, which after 2000, ceased to universally recognize this unit of mass.
Converting ounces to grams in a table
| Units | Avoirdupois ounce | Troy ounce |
| 1 | 28.35 g | 31.10 g |
| 2 | 56.70 g | 62.21 g |
| 3 | 85.05 g | 93.31 g |
| 4 | 113.4 g | 124.41 g |
| 5 | 141.75 g | 155.52 g |
| 6 | 170.10 g | 186.62 g |
| 7 | 198.45 g | 217.72 g |
| 8 | 226.80 g | 248.83 g |
| 9 | 255.15 g | 279.93 g |
| 10 | 283.50 g | 311.04 g |
| 25 | 708.75 g | 777.59 g |
| 50 | 1417.5 g | 1555.18 g |
| 75 | 2126.25 g | 2332.76 g |
| 100 | 2835 g | 3110.35 g |
| 150 | 4252.5 g | 4665.53 g |
It is worth adding that 1 kilogram consists of 35.27 avoirdupois ounce and 42.83 troy ounce.
Avoirdupois ounce to avoirdupois pound and grains
| Ounces | Avoirdupois pound | Grains |
| 5 | 0.3125 | 2187.5 |
| 10 | 0.625 | 4375 |
| 15 | 0.9375 | 6562.5 |
| 20 | 1.25 | 8750 |
| 25 | 1.5625 | 10937.5 |
| 30 | 1.875 | 13125 |
| 35 | 2.1875 | 15312.5 |
| 40 | 2.5 | 17500 |
| 45 | 2.8125 | 19687.5 |
| 50 | 3.125 | 21875 |
| 55 | 3.4375 | 24062.5 |
| 60 | 3.75 | 26250 |
| 65 | 4.0625 | 28437.5 |
| 70 | 4.375 | 30625 |
| 75 | 4.6875 | 32812.5 |
| 80 | 5 | 35000 |
| 85 | 5.3125 | 37187.5 |
| 90 | 5.625 | 39375 |
| 95 | 5.9375 | 41562.5 |
| 100 | 6.25 | 43750 |