| troy ounce | 1 oz t | 2 oz t | 3 oz t | 4 oz t | 5 oz t | 6 oz t | 7 oz t | 8 oz t | 9 oz t | 10 oz t | 11 oz t | 12 oz t | 13 oz t | 14 oz t | 15 oz t | 16 oz t | 17 oz t | 18 oz t | 19 oz t | 20 oz t | 21 oz t | 22 oz t | 23 oz t | 24 oz t | 25 oz t | 26 oz t | 27 oz t | 28 oz t | 29 oz t | 30 oz t | 31 oz t | 32 oz t | 33 oz t | 34 oz t | 35 oz t | 36 oz t | 37 oz t | 38 oz t | 39 oz t | 40 oz t | 41 oz t | 42 oz t | 43 oz t | 44 oz t | 45 oz t | 46 oz t | 47 oz t | 48 oz t | 49 oz t | 50 oz t | 51 oz t | 52 oz t | 53 oz t | 54 oz t | 55 oz t | 56 oz t | 57 oz t | 58 oz t | 59 oz t | 60 oz t | 61 oz t | 62 oz t | 63 oz t | 64 oz t | 65 oz t | 66 oz t | 67 oz t | 68 oz t | 69 oz t | 70 oz t | 71 oz t | 72 oz t | 73 oz t | 74 oz t | 75 oz t | 76 oz t | 77 oz t | 78 oz t | 79 oz t | 80 oz t | 81 oz t | 82 oz t | 83 oz t | 84 oz t | 85 oz t | 86 oz t | 87 oz t | 88 oz t | 89 oz t | 90 oz t | 91 oz t | 92 oz t | 93 oz t | 94 oz t | 95 oz t | 96 oz t | 97 oz t | 98 oz t | 99 oz t | 100 oz t |
| grain | 480 gr | 960 gr | 1 440 gr | 1 920 gr | 2 400 gr | 2 880 gr | 3 360 gr | 3 840 gr | 4 320 gr | 4 800 gr | 5 280 gr | 5 760 gr | 6 240 gr | 6 720 gr | 7 200 gr | 7 680 gr | 8 160 gr | 8 640 gr | 9 120 gr | 9 600 gr | 10 080 gr | 10 560 gr | 11 040 gr | 11 520 gr | 12 000 gr | 12 480 gr | 12 960 gr | 13 440 gr | 13 920 gr | 14 400 gr | 14 880 gr | 15 360 gr | 15 840 gr | 16 320 gr | 16 800 gr | 17 280 gr | 17 760 gr | 18 240 gr | 18 720 gr | 19 200 gr | 19 680 gr | 20 160 gr | 20 640 gr | 21 120 gr | 21 600 gr | 22 080 gr | 22 560 gr | 23 040 gr | 23 520 gr | 24 000 gr | 24 480 gr | 24 960 gr | 25 440 gr | 25 920 gr | 26 400 gr | 26 880 gr | 27 360 gr | 27 840 gr | 28 320 gr | 28 800 gr | 29 280 gr | 29 760 gr | 30 240 gr | 30 720 gr | 31 200 gr | 31 680 gr | 32 160 gr | 32 640 gr | 33 120 gr | 33 600 gr | 34 080 gr | 34 560 gr | 35 040 gr | 35 520 gr | 36 000 gr | 36 480 gr | 36 960 gr | 37 440 gr | 37 920 gr | 38 400 gr | 38 880 gr | 39 360 gr | 39 840 gr | 40 320 gr | 40 800 gr | 41 280 gr | 41 760 gr | 42 240 gr | 42 720 gr | 43 200 gr | 43 680 gr | 44 160 gr | 44 640 gr | 45 120 gr | 45 600 gr | 46 080 gr | 46 560 gr | 47 040 gr | 47 520 gr | 48 000 gr |
One troy ounce (oz t) is equal to 31.103 476 8 grams. Also equal to 1.097 142 86 avoirdupois ounces, exactly 192⁄175, or about 10% larger.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| troy ounce | oz t | ≡ 1⁄12 lb t | = 31.1034768 g | Imperial/US |
| troy ounces | grains | troy ounces | grains |
|---|---|---|---|
| 1 | = 480 | 11 | = 5280 |
| 2.5 | = 1200 | 12.5 | = 6000 |
| 4 | = 1920 | 14 | = 6720 |
| 5.5 | = 2640 | 15.5 | = 7440 |
| 7 | = 3360 | 17 | = 8160 |
| 8.5 | = 4080 | 18.5 | = 8880 |
| 10 | = 4800 | 20 | = 9600 |
A grain is a unit of measurement of mass, and, for the troy grain, equal to exactly 64.79891 milligrams. It is nominally based upon the mass of a single seed of a cereal.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| grain | gr | ≡ 1⁄7000 lb av | = 64.79891 mg | Imperial/US |
| grains | troy ounces | grains | troy ounces |
|---|---|---|---|
| 1 | = 0.0020833333333333 | 11 | = 0.022916666666667 |
| 2.5 | = 0.0052083333333333 | 12.5 | = 0.026041666666667 |
| 4 | = 0.0083333333333333 | 14 | = 0.029166666666667 |
| 5.5 | = 0.011458333333333 | 15.5 | = 0.032291666666667 |
| 7 | = 0.014583333333333 | 17 | = 0.035416666666667 |
| 8.5 | = 0.017708333333333 | 18.5 | = 0.038541666666667 |
| 10 | = 0.020833333333333 | 20 | = 0.041666666666667 |
| troy ounces | grains |
|---|---|
| 1 | = 480 |
| 0.0020833 | = 1 |
| Symbol | Definition |
|---|---|
| ≡ | exactly equal |
| ≈ | approximately equal to |
| = | equal to |
| digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |