carat | 1 ct | 2 ct | 3 ct | 4 ct | 5 ct | 6 ct | 7 ct | 8 ct | 9 ct | 10 ct | 11 ct | 12 ct | 13 ct | 14 ct | 15 ct | 16 ct | 17 ct | 18 ct | 19 ct | 20 ct | 21 ct | 22 ct | 23 ct | 24 ct | 25 ct | 26 ct | 27 ct | 28 ct | 29 ct | 30 ct | 31 ct | 32 ct | 33 ct | 34 ct | 35 ct | 36 ct | 37 ct | 38 ct | 39 ct | 40 ct | 41 ct | 42 ct | 43 ct | 44 ct | 45 ct | 46 ct | 47 ct | 48 ct | 49 ct | 50 ct | 51 ct | 52 ct | 53 ct | 54 ct | 55 ct | 56 ct | 57 ct | 58 ct | 59 ct | 60 ct | 61 ct | 62 ct | 63 ct | 64 ct | 65 ct | 66 ct | 67 ct | 68 ct | 69 ct | 70 ct | 71 ct | 72 ct | 73 ct | 74 ct | 75 ct | 76 ct | 77 ct | 78 ct | 79 ct | 80 ct | 81 ct | 82 ct | 83 ct | 84 ct | 85 ct | 86 ct | 87 ct | 88 ct | 89 ct | 90 ct | 91 ct | 92 ct | 93 ct | 94 ct | 95 ct | 96 ct | 97 ct | 98 ct | 99 ct | 100 ct |
grain | 3.0864717 gr | 6.1729433 gr | 9.2594150 gr | 12.3458867 gr | 15.4323584 gr | 18.5188300 gr | 21.6053017 gr | 24.6917734 gr | 27.7782450 gr | 30.8647167 gr | 33.9511884 gr | 37.0376600 gr | 40.1241317 gr | 43.2106034 gr | 46.2970751 gr | 49.3835467 gr | 52.4700184 gr | 55.5564901 gr | 58.6429617 gr | 61.7294334 gr | 64.8159051 gr | 67.9023768 gr | 70.9888484 gr | 74.0753201 gr | 77.1617918 gr | 80.2482634 gr | 83.3347351 gr | 86.4212068 gr | 89.5076784 gr | 92.5941501 gr | 95.6806218 gr | 98.7670935 gr | 101.8535651 gr | 104.9400368 gr | 108.0265085 gr | 111.1129801 gr | 114.1994518 gr | 117.2859235 gr | 120.3723952 gr | 123.4588668 gr | 126.5453385 gr | 129.6318102 gr | 132.7182818 gr | 135.8047535 gr | 138.8912252 gr | 141.9776968 gr | 145.0641685 gr | 148.1506402 gr | 151.2371119 gr | 154.3235835 gr | 157.4100552 gr | 160.4965269 gr | 163.5829985 gr | 166.6694702 gr | 169.7559419 gr | 172.8424136 gr | 175.9288852 gr | 179.0153569 gr | 182.1018286 gr | 185.1883002 gr | 188.2747719 gr | 191.3612436 gr | 194.4477152 gr | 197.5341869 gr | 200.6206586 gr | 203.7071303 gr | 206.7936019 gr | 209.8800736 gr | 212.9665453 gr | 216.0530169 gr | 219.1394886 gr | 222.2259603 gr | 225.3124320 gr | 228.3989036 gr | 231.4853753 gr | 234.5718470 gr | 237.6583186 gr | 240.7447903 gr | 243.8312620 gr | 246.9177336 gr | 250.0042053 gr | 253.0906770 gr | 256.1771487 gr | 259.2636203 gr | 262.350092 gr | 265.4365637 gr | 268.5230353 gr | 271.6095070 gr | 274.6959787 gr | 277.7824504 gr | 280.8689220 gr | 283.9553937 gr | 287.0418654 gr | 290.1283370 gr | 293.2148087 gr | 296.3012804 gr | 299.3877520 gr | 302.4742237 gr | 305.5606954 gr | 308.6471671 gr |
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 | grains | carats | grains |
---|---|---|---|
1 | = 3.0864716705883 | 11 | = 33.951188376471 |
2.5 | = 7.7161791764707 | 12.5 | = 38.580895882354 |
4 | = 12.345886682353 | 14 | = 43.210603388236 |
5.5 | = 16.975594188236 | 15.5 | = 47.840310894118 |
7 | = 21.605301694118 | 17 | = 52.470018400001 |
8.5 | = 26.2350092 | 18.5 | = 57.099725905883 |
10 | = 30.864716705883 | 20 | = 61.729433411766 |
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 | carats | grains | carats |
---|---|---|---|
1 | = 0.32399455 | 11 | = 3.56394005 |
2.5 | = 0.809986375 | 12.5 | = 4.049931875 |
4 | = 1.2959782 | 14 | = 4.5359237 |
5.5 | = 1.781970025 | 15.5 | = 5.021915525 |
7 | = 2.26796185 | 17 | = 5.50790735 |
8.5 | = 2.753953675 | 18.5 | = 5.993899175 |
10 | = 3.2399455 | 20 | = 6.479891 |
carats | grains |
---|---|
1 | = 3.0864717 |
0.3239946 | = 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 …) |