attogram | 1 ag | 2 ag | 3 ag | 4 ag | 5 ag | 6 ag | 7 ag | 8 ag | 9 ag | 10 ag | 11 ag | 12 ag | 13 ag | 14 ag | 15 ag | 16 ag | 17 ag | 18 ag | 19 ag | 20 ag | 21 ag | 22 ag | 23 ag | 24 ag | 25 ag | 26 ag | 27 ag | 28 ag | 29 ag | 30 ag | 31 ag | 32 ag | 33 ag | 34 ag | 35 ag | 36 ag | 37 ag | 38 ag | 39 ag | 40 ag | 41 ag | 42 ag | 43 ag | 44 ag | 45 ag | 46 ag | 47 ag | 48 ag | 49 ag | 50 ag | 51 ag | 52 ag | 53 ag | 54 ag | 55 ag | 56 ag | 57 ag | 58 ag | 59 ag | 60 ag | 61 ag | 62 ag | 63 ag | 64 ag | 65 ag | 66 ag | 67 ag | 68 ag | 69 ag | 70 ag | 71 ag | 72 ag | 73 ag | 74 ag | 75 ag | 76 ag | 77 ag | 78 ag | 79 ag | 80 ag | 81 ag | 82 ag | 83 ag | 84 ag | 85 ag | 86 ag | 87 ag | 88 ag | 89 ag | 90 ag | 91 ag | 92 ag | 93 ag | 94 ag | 95 ag | 96 ag | 97 ag | 98 ag | 99 ag | 100 ag |
carat | 5.0 × 10-18 ct | 1.0 × 10-17 ct | 1.5 × 10-17 ct | 2.0 × 10-17 ct | 2.5 × 10-17 ct | 3.0 × 10-17 ct | 3.5 × 10-17 ct | 4.0 × 10-17 ct | 4.5 × 10-17 ct | 5.0 × 10-17 ct | 5.5 × 10-17 ct | 6.0 × 10-17 ct | 6.5 × 10-17 ct | 7.0 × 10-17 ct | 7.5 × 10-17 ct | 8.0 × 10-17 ct | 8.5 × 10-17 ct | 9.0 × 10-17 ct | 9.5 × 10-17 ct | 1.0 × 10-16 ct | 1.05 × 10-16 ct | 1.1 × 10-16 ct | 1.15 × 10-16 ct | 1.2 × 10-16 ct | 1.25 × 10-16 ct | 1.3 × 10-16 ct | 1.35 × 10-16 ct | 1.4 × 10-16 ct | 1.45 × 10-16 ct | 1.5 × 10-16 ct | 1.55 × 10-16 ct | 1.6 × 10-16 ct | 1.65 × 10-16 ct | 1.7 × 10-16 ct | 1.75 × 10-16 ct | 1.8 × 10-16 ct | 1.85 × 10-16 ct | 1.9 × 10-16 ct | 1.95 × 10-16 ct | 2.0 × 10-16 ct | 2.05 × 10-16 ct | 2.1 × 10-16 ct | 2.15 × 10-16 ct | 2.2 × 10-16 ct | 2.25 × 10-16 ct | 2.3 × 10-16 ct | 2.35 × 10-16 ct | 2.4 × 10-16 ct | 2.45 × 10-16 ct | 2.5 × 10-16 ct | 2.55 × 10-16 ct | 2.6 × 10-16 ct | 2.65 × 10-16 ct | 2.7 × 10-16 ct | 2.75 × 10-16 ct | 2.8 × 10-16 ct | 2.85 × 10-16 ct | 2.9 × 10-16 ct | 2.95 × 10-16 ct | 3.0 × 10-16 ct | 3.05 × 10-16 ct | 3.1 × 10-16 ct | 3.15 × 10-16 ct | 3.2 × 10-16 ct | 3.25 × 10-16 ct | 3.3 × 10-16 ct | 3.35 × 10-16 ct | 3.4 × 10-16 ct | 3.45 × 10-16 ct | 3.5 × 10-16 ct | 3.55 × 10-16 ct | 3.6 × 10-16 ct | 3.65 × 10-16 ct | 3.7 × 10-16 ct | 3.75 × 10-16 ct | 3.8 × 10-16 ct | 3.85 × 10-16 ct | 3.9 × 10-16 ct | 3.95 × 10-16 ct | 4.0 × 10-16 ct | 4.05 × 10-16 ct | 4.1 × 10-16 ct | 4.15 × 10-16 ct | 4.2 × 10-16 ct | 4.25 × 10-16 ct | 4.3 × 10-16 ct | 4.35 × 10-16 ct | 4.4 × 10-16 ct | 4.45 × 10-16 ct | 4.5 × 10-16 ct | 4.55 × 10-16 ct | 4.6 × 10-16 ct | 4.65 × 10-16 ct | 4.7 × 10-16 ct | 4.75 × 10-16 ct | 4.8 × 10-16 ct | 4.85 × 10-16 ct | 4.9 × 10-16 ct | 4.95 × 10-16 ct | 5.0 × 10-16 ct |
attogram or attogramme is equal to 10-18 gram (unit of mass), comes from a combination of the metric prefix atto (a) with the gram (g). Plural name is attograms.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
attogram | ag | ≡ 10-18 g | ≡ 10-21 kg | Metric system SI |
attograms | carats | attograms | carats |
---|---|---|---|
1 | ≡ 5.0E-18 | 11 | ≡ 5.5E-17 |
2.5 | ≡ 1.25E-17 | 12.5 | ≡ 6.25E-17 |
4 | ≡ 2.0E-17 | 14 | ≡ 7.0E-17 |
5.5 | ≡ 2.75E-17 | 15.5 | ≡ 7.75E-17 |
7 | ≡ 3.5E-17 | 17 | ≡ 8.5E-17 |
8.5 | ≡ 4.25E-17 | 18.5 | ≡ 9.25E-17 |
10 | ≡ 5.0E-17 | 20 | ≡ 1.0E-16 |
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 | attograms | carats | attograms |
---|---|---|---|
1 | ≡ 2.0E+17 | 11 | ≡ 2.2E+18 |
2.5 | ≡ 5.0E+17 | 12.5 | ≡ 2.5E+18 |
4 | ≡ 8.0E+17 | 14 | ≡ 2.8E+18 |
5.5 | ≡ 1.1E+18 | 15.5 | ≡ 3.1E+18 |
7 | ≡ 1.4E+18 | 17 | ≡ 3.4E+18 |
8.5 | ≡ 1.7E+18 | 18.5 | ≡ 3.7E+18 |
10 | ≡ 2.0E+18 | 20 | ≡ 4.0E+18 |
attograms | carats |
---|---|
1 | ≡ 5.0 × 10-18 |
2.0 × 1017 | ≡ 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 …) |