| zeptogram | 1 zg | 2 zg | 3 zg | 4 zg | 5 zg | 6 zg | 7 zg | 8 zg | 9 zg | 10 zg | 11 zg | 12 zg | 13 zg | 14 zg | 15 zg | 16 zg | 17 zg | 18 zg | 19 zg | 20 zg | 21 zg | 22 zg | 23 zg | 24 zg | 25 zg | 26 zg | 27 zg | 28 zg | 29 zg | 30 zg | 31 zg | 32 zg | 33 zg | 34 zg | 35 zg | 36 zg | 37 zg | 38 zg | 39 zg | 40 zg | 41 zg | 42 zg | 43 zg | 44 zg | 45 zg | 46 zg | 47 zg | 48 zg | 49 zg | 50 zg | 51 zg | 52 zg | 53 zg | 54 zg | 55 zg | 56 zg | 57 zg | 58 zg | 59 zg | 60 zg | 61 zg | 62 zg | 63 zg | 64 zg | 65 zg | 66 zg | 67 zg | 68 zg | 69 zg | 70 zg | 71 zg | 72 zg | 73 zg | 74 zg | 75 zg | 76 zg | 77 zg | 78 zg | 79 zg | 80 zg | 81 zg | 82 zg | 83 zg | 84 zg | 85 zg | 86 zg | 87 zg | 88 zg | 89 zg | 90 zg | 91 zg | 92 zg | 93 zg | 94 zg | 95 zg | 96 zg | 97 zg | 98 zg | 99 zg | 100 zg |
| carat | 5.0 × 10-21 ct | 1.0 × 10-20 ct | 1.5 × 10-20 ct | 2.0 × 10-20 ct | 2.5 × 10-20 ct | 3.0 × 10-20 ct | 3.5 × 10-20 ct | 4.0 × 10-20 ct | 4.5 × 10-20 ct | 5.0 × 10-20 ct | 5.5 × 10-20 ct | 6.0 × 10-20 ct | 6.5 × 10-20 ct | 7.0 × 10-20 ct | 7.5 × 10-20 ct | 8.0 × 10-20 ct | 8.5 × 10-20 ct | 9.0 × 10-20 ct | 9.5 × 10-20 ct | 1.0 × 10-19 ct | 1.05 × 10-19 ct | 1.1 × 10-19 ct | 1.15 × 10-19 ct | 1.2 × 10-19 ct | 1.25 × 10-19 ct | 1.3 × 10-19 ct | 1.35 × 10-19 ct | 1.4 × 10-19 ct | 1.45 × 10-19 ct | 1.5 × 10-19 ct | 1.55 × 10-19 ct | 1.6 × 10-19 ct | 1.65 × 10-19 ct | 1.7 × 10-19 ct | 1.75 × 10-19 ct | 1.8 × 10-19 ct | 1.85 × 10-19 ct | 1.9 × 10-19 ct | 1.95 × 10-19 ct | 2.0 × 10-19 ct | 2.05 × 10-19 ct | 2.1 × 10-19 ct | 2.15 × 10-19 ct | 2.2 × 10-19 ct | 2.25 × 10-19 ct | 2.3 × 10-19 ct | 2.35 × 10-19 ct | 2.4 × 10-19 ct | 2.45 × 10-19 ct | 2.5 × 10-19 ct | 2.55 × 10-19 ct | 2.6 × 10-19 ct | 2.65 × 10-19 ct | 2.7 × 10-19 ct | 2.75 × 10-19 ct | 2.8 × 10-19 ct | 2.85 × 10-19 ct | 2.9 × 10-19 ct | 2.95 × 10-19 ct | 3.0 × 10-19 ct | 3.05 × 10-19 ct | 3.1 × 10-19 ct | 3.15 × 10-19 ct | 3.2 × 10-19 ct | 3.25 × 10-19 ct | 3.3 × 10-19 ct | 3.35 × 10-19 ct | 3.4 × 10-19 ct | 3.45 × 10-19 ct | 3.5 × 10-19 ct | 3.55 × 10-19 ct | 3.6 × 10-19 ct | 3.65 × 10-19 ct | 3.7 × 10-19 ct | 3.75 × 10-19 ct | 3.8 × 10-19 ct | 3.85 × 10-19 ct | 3.9 × 10-19 ct | 3.95 × 10-19 ct | 4.0 × 10-19 ct | 4.05 × 10-19 ct | 4.1 × 10-19 ct | 4.15 × 10-19 ct | 4.2 × 10-19 ct | 4.25 × 10-19 ct | 4.3 × 10-19 ct | 4.35 × 10-19 ct | 4.4 × 10-19 ct | 4.45 × 10-19 ct | 4.5 × 10-19 ct | 4.55 × 10-19 ct | 4.6 × 10-19 ct | 4.65 × 10-19 ct | 4.7 × 10-19 ct | 4.75 × 10-19 ct | 4.8 × 10-19 ct | 4.85 × 10-19 ct | 4.9 × 10-19 ct | 4.95 × 10-19 ct | 5.0 × 10-19 ct |
zeptogram or zeptogramme is equal to 10-21 gram (unit of mass), comes from a combination of the metric prefix zepto (z) with the gram (g). Plural name is zeptograms.
| 1 zeptograms ≡ 5.0E-21 carats | 11 zeptograms ≡ 5.5E-20 carats |
| 2.5 zeptograms ≡ 1.25E-20 carats | 12.5 zeptograms ≡ 6.25E-20 carats |
| 4 zeptograms ≡ 2.0E-20 carats | 14 zeptograms ≡ 7.0E-20 carats |
| 5.5 zeptograms ≡ 2.75E-20 carats | 15.5 zeptograms ≡ 7.75E-20 carats |
| 7 zeptograms ≡ 3.5E-20 carats | 17 zeptograms ≡ 8.5E-20 carats |
| 8.5 zeptograms ≡ 4.25E-20 carats | 18.5 zeptograms ≡ 9.25E-20 carats |
| 10 zeptograms ≡ 5.0E-20 carats | 20 zeptograms ≡ 1.0E-19 carats |
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.
| 1 carats ≡ 2.0E+20 zeptograms | 11 carats ≡ 2.2E+21 zeptograms |
| 2.5 carats ≡ 5.0E+20 zeptograms | 12.5 carats ≡ 2.5E+21 zeptograms |
| 4 carats ≡ 8.0E+20 zeptograms | 14 carats ≡ 2.8E+21 zeptograms |
| 5.5 carats ≡ 1.1E+21 zeptograms | 15.5 carats ≡ 3.1E+21 zeptograms |
| 7 carats ≡ 1.4E+21 zeptograms | 17 carats ≡ 3.4E+21 zeptograms |
| 8.5 carats ≡ 1.7E+21 zeptograms | 18.5 carats ≡ 3.7E+21 zeptograms |
| 10 carats ≡ 2.0E+21 zeptograms | 20 carats ≡ 4.0E+21 zeptograms |
| 1 zeptograms ≡ 5.0 × 10-21 carats |
| 1 carats ≡ 2.0 × 1020 zeptograms |