| 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 |
| femtogram | 2.0 × 1014 fg | 4.0 × 1014 fg | 6.0 × 1014 fg | 8.0 × 1014 fg | 1.0 × 1015 fg | 1.2 × 1015 fg | 1.4 × 1015 fg | 1.6 × 1015 fg | 1.8 × 1015 fg | 2.0 × 1015 fg | 2.2 × 1015 fg | 2.4 × 1015 fg | 2.6 × 1015 fg | 2.8 × 1015 fg | 3.0 × 1015 fg | 3.2 × 1015 fg | 3.4 × 1015 fg | 3.6 × 1015 fg | 3.8 × 1015 fg | 4.0 × 1015 fg | 4.2 × 1015 fg | 4.4 × 1015 fg | 4.6 × 1015 fg | 4.8 × 1015 fg | 5.0 × 1015 fg | 5.2 × 1015 fg | 5.4 × 1015 fg | 5.6 × 1015 fg | 5.8 × 1015 fg | 6.0 × 1015 fg | 6.2 × 1015 fg | 6.4 × 1015 fg | 6.6 × 1015 fg | 6.8 × 1015 fg | 7.0 × 1015 fg | 7.2 × 1015 fg | 7.4 × 1015 fg | 7.6 × 1015 fg | 7.8 × 1015 fg | 8.0 × 1015 fg | 8.2 × 1015 fg | 8.4 × 1015 fg | 8.6 × 1015 fg | 8.8 × 1015 fg | 9.0 × 1015 fg | 9.2 × 1015 fg | 9.4 × 1015 fg | 9.6 × 1015 fg | 9.8 × 1015 fg | 1.0 × 1016 fg | 1.02 × 1016 fg | 1.04 × 1016 fg | 1.06 × 1016 fg | 1.08 × 1016 fg | 1.1 × 1016 fg | 1.12 × 1016 fg | 1.14 × 1016 fg | 1.16 × 1016 fg | 1.18 × 1016 fg | 1.2 × 1016 fg | 1.22 × 1016 fg | 1.24 × 1016 fg | 1.26 × 1016 fg | 1.28 × 1016 fg | 1.3 × 1016 fg | 1.32 × 1016 fg | 1.34 × 1016 fg | 1.36 × 1016 fg | 1.38 × 1016 fg | 1.4 × 1016 fg | 1.42 × 1016 fg | 1.44 × 1016 fg | 1.46 × 1016 fg | 1.48 × 1016 fg | 1.5 × 1016 fg | 1.52 × 1016 fg | 1.54 × 1016 fg | 1.56 × 1016 fg | 1.58 × 1016 fg | 1.6 × 1016 fg | 1.62 × 1016 fg | 1.64 × 1016 fg | 1.66 × 1016 fg | 1.68 × 1016 fg | 1.7 × 1016 fg | 1.72 × 1016 fg | 1.74 × 1016 fg | 1.76 × 1016 fg | 1.78 × 1016 fg | 1.8 × 1016 fg | 1.82 × 1016 fg | 1.84 × 1016 fg | 1.86 × 1016 fg | 1.88 × 1016 fg | 1.9 × 1016 fg | 1.92 × 1016 fg | 1.94 × 1016 fg | 1.96 × 1016 fg | 1.98 × 1016 fg | 2.0 × 1016 fg |
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+14 femtograms | 11 carats ≡ 2.2E+15 femtograms |
| 2.5 carats ≡ 5.0E+14 femtograms | 12.5 carats ≡ 2.5E+15 femtograms |
| 4 carats ≡ 8.0E+14 femtograms | 14 carats ≡ 2.8E+15 femtograms |
| 5.5 carats ≡ 1.1E+15 femtograms | 15.5 carats ≡ 3.1E+15 femtograms |
| 7 carats ≡ 1.4E+15 femtograms | 17 carats ≡ 3.4E+15 femtograms |
| 8.5 carats ≡ 1.7E+15 femtograms | 18.5 carats ≡ 3.7E+15 femtograms |
| 10 carats ≡ 2.0E+15 femtograms | 20 carats ≡ 4.0E+15 femtograms |
Femtogram or femtogramme is equal to 10-15 gram (unit of mass), comes from a combination of the metric prefix femto (f) with the gram (g). Plural name is femtograms.
| 1 femtograms ≡ 5.0E-15 carats | 11 femtograms ≡ 5.5E-14 carats |
| 2.5 femtograms ≡ 1.25E-14 carats | 12.5 femtograms ≡ 6.25E-14 carats |
| 4 femtograms ≡ 2.0E-14 carats | 14 femtograms ≡ 7.0E-14 carats |
| 5.5 femtograms ≡ 2.75E-14 carats | 15.5 femtograms ≡ 7.75E-14 carats |
| 7 femtograms ≡ 3.5E-14 carats | 17 femtograms ≡ 8.5E-14 carats |
| 8.5 femtograms ≡ 4.25E-14 carats | 18.5 femtograms ≡ 9.25E-14 carats |
| 10 femtograms ≡ 5.0E-14 carats | 20 femtograms ≡ 1.0E-13 carats |
| 1 carats ≡ 2.0 × 1014 femtograms |
| 1 femtograms ≡ 5.0 × 10-15 carats |