| troy pound | 1 lb t | 2 lb t | 3 lb t | 4 lb t | 5 lb t | 6 lb t | 7 lb t | 8 lb t | 9 lb t | 10 lb t | 11 lb t | 12 lb t | 13 lb t | 14 lb t | 15 lb t | 16 lb t | 17 lb t | 18 lb t | 19 lb t | 20 lb t | 21 lb t | 22 lb t | 23 lb t | 24 lb t | 25 lb t | 26 lb t | 27 lb t | 28 lb t | 29 lb t | 30 lb t | 31 lb t | 32 lb t | 33 lb t | 34 lb t | 35 lb t | 36 lb t | 37 lb t | 38 lb t | 39 lb t | 40 lb t | 41 lb t | 42 lb t | 43 lb t | 44 lb t | 45 lb t | 46 lb t | 47 lb t | 48 lb t | 49 lb t | 50 lb t | 51 lb t | 52 lb t | 53 lb t | 54 lb t | 55 lb t | 56 lb t | 57 lb t | 58 lb t | 59 lb t | 60 lb t | 61 lb t | 62 lb t | 63 lb t | 64 lb t | 65 lb t | 66 lb t | 67 lb t | 68 lb t | 69 lb t | 70 lb t | 71 lb t | 72 lb t | 73 lb t | 74 lb t | 75 lb t | 76 lb t | 77 lb t | 78 lb t | 79 lb t | 80 lb t | 81 lb t | 82 lb t | 83 lb t | 84 lb t | 85 lb t | 86 lb t | 87 lb t | 88 lb t | 89 lb t | 90 lb t | 91 lb t | 92 lb t | 93 lb t | 94 lb t | 95 lb t | 96 lb t | 97 lb t | 98 lb t | 99 lb t | 100 lb t |
| carat | 1,866.208608 ct | 3,732.417216 ct | 5,598.625824 ct | 7,464.834432 ct | 9,331.04304 ct | 11,197.251648 ct | 13,063.460256 ct | 14,929.668864 ct | 16,795.877472 ct | 18,662.08608 ct | 20,528.294688 ct | 22,394.503296 ct | 24,260.711904 ct | 26,126.920512 ct | 27,993.12912 ct | 29,859.337728 ct | 31,725.546336 ct | 33,591.754944 ct | 35,457.963552 ct | 37,324.17216 ct | 39,190.380768 ct | 41,056.589376 ct | 42,922.797984 ct | 44,789.006592 ct | 46,655.2152 ct | 48,521.423808 ct | 50,387.632416 ct | 52,253.841024 ct | 54,120.049632 ct | 55,986.25824 ct | 57,852.466848 ct | 59,718.675456 ct | 61,584.884064 ct | 63,451.092672 ct | 65,317.30128 ct | 67,183.509888 ct | 69,049.718496 ct | 70,915.927104 ct | 72,782.135712 ct | 74,648.34432 ct | 76,514.552928 ct | 78,380.761536 ct | 80,246.970144 ct | 82,113.178752 ct | 83,979.38736 ct | 85,845.595968 ct | 87,711.804576 ct | 89,578.013184 ct | 91,444.221792 ct | 93,310.4304 ct | 95,176.639008 ct | 97,042.847616 ct | 98,909.056224 ct | 100,775.264832 ct | 102,641.47344 ct | 104,507.682048 ct | 106,373.890656 ct | 108,240.099264 ct | 110,106.307872 ct | 111,972.51648 ct | 113,838.725088 ct | 115,704.933696 ct | 117,571.142304 ct | 119,437.350912 ct | 121,303.55952 ct | 123,169.768128 ct | 125,035.976736 ct | 126,902.185344 ct | 128,768.393952 ct | 130,634.60256 ct | 132,500.811168 ct | 134,367.019776 ct | 136,233.228384 ct | 138,099.436992 ct | 139,965.6456 ct | 141,831.854208 ct | 143,698.062816 ct | 145,564.271424 ct | 147,430.480032 ct | 149,296.68864 ct | 151,162.897248 ct | 153,029.105856 ct | 154,895.314464 ct | 156,761.523072 ct | 158,627.73168 ct | 160,493.940288 ct | 162,360.148896 ct | 164,226.357504 ct | 166,092.566112 ct | 167,958.77472 ct | 169,824.983328 ct | 171,691.191936 ct | 173,557.400544 ct | 175,423.609152 ct | 177,289.81776 ct | 179,156.026368 ct | 181,022.234976 ct | 182,888.443584 ct | 184,754.652192 ct | 186,620.8608 ct |
The troy pound is 5 760 grains (≈ 373.24 g, 12 oz t), while an avoirdupois pound is approximately 21.53% heavier at 7 000 grains (≈ 453.59 g).
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| troy pound | lb t | ≡ 5760 grains | = 0.3732417216 kg | Imperial/US |
| troy pounds | carats | troy pounds | carats |
|---|---|---|---|
| 1 | = 1866.208608 | 11 | = 20528.294688 |
| 2.5 | = 4665.52152 | 12.5 | = 23327.6076 |
| 4 | = 7464.834432 | 14 | = 26126.920512 |
| 5.5 | = 10264.147344 | 15.5 | = 28926.233424 |
| 7 | = 13063.460256 | 17 | = 31725.546336 |
| 8.5 | = 15862.773168 | 18.5 | = 34524.859248 |
| 10 | = 18662.08608 | 20 | = 37324.17216 |
The carat (ct) is a unit of mass equal to 200 mg (0.2 g; 0.007055 oz) and is used for measuring gemstones and pearls.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| carat | ct | ≡ 200 mg | ≡ 200 mg | Imperial/US |
| carats | troy pounds | carats | troy pounds |
|---|---|---|---|
| 1 | = 0.0005358457761438 | 11 | = 0.0058943035375818 |
| 2.5 | = 0.0013396144403595 | 12.5 | = 0.0066980722017975 |
| 4 | = 0.0021433831045752 | 14 | = 0.0075018408660132 |
| 5.5 | = 0.0029471517687909 | 15.5 | = 0.0083056095302289 |
| 7 | = 0.0037509204330066 | 17 | = 0.0091093781944446 |
| 8.5 | = 0.0045546890972223 | 18.5 | = 0.0099131468586603 |
| 10 | = 0.005358457761438 | 20 | = 0.010716915522876 |
| troy pounds | carats |
|---|---|
| 1 | = 1,866.208608 |
| 0.0005358 | = 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 …) |