| femtogram | 1 fg | 2 fg | 3 fg | 4 fg | 5 fg | 6 fg | 7 fg | 8 fg | 9 fg | 10 fg | 11 fg | 12 fg | 13 fg | 14 fg | 15 fg | 16 fg | 17 fg | 18 fg | 19 fg | 20 fg | 21 fg | 22 fg | 23 fg | 24 fg | 25 fg | 26 fg | 27 fg | 28 fg | 29 fg | 30 fg | 31 fg | 32 fg | 33 fg | 34 fg | 35 fg | 36 fg | 37 fg | 38 fg | 39 fg | 40 fg | 41 fg | 42 fg | 43 fg | 44 fg | 45 fg | 46 fg | 47 fg | 48 fg | 49 fg | 50 fg | 51 fg | 52 fg | 53 fg | 54 fg | 55 fg | 56 fg | 57 fg | 58 fg | 59 fg | 60 fg | 61 fg | 62 fg | 63 fg | 64 fg | 65 fg | 66 fg | 67 fg | 68 fg | 69 fg | 70 fg | 71 fg | 72 fg | 73 fg | 74 fg | 75 fg | 76 fg | 77 fg | 78 fg | 79 fg | 80 fg | 81 fg | 82 fg | 83 fg | 84 fg | 85 fg | 86 fg | 87 fg | 88 fg | 89 fg | 90 fg | 91 fg | 92 fg | 93 fg | 94 fg | 95 fg | 96 fg | 97 fg | 98 fg | 99 fg | 100 fg |
| zeptogram | 1 000 000 zg | 2 000 000 zg | 3 000 000 zg | 4 000 000 zg | 5 000 000 zg | 6 000 000 zg | 7 000 000 zg | 8 000 000 zg | 9 000 000 zg | 10 000 000 zg | 11 000 000 zg | 12 000 000 zg | 13 000 000 zg | 14 000 000 zg | 15 000 000 zg | 16 000 000 zg | 17 000 000 zg | 18 000 000 zg | 19 000 000 zg | 20 000 000 zg | 21 000 000 zg | 22 000 000 zg | 23 000 000 zg | 24 000 000 zg | 25 000 000 zg | 26 000 000 zg | 27 000 000 zg | 28 000 000 zg | 29 000 000 zg | 30 000 000 zg | 31 000 000 zg | 32 000 000 zg | 33 000 000 zg | 34 000 000 zg | 35 000 000 zg | 36 000 000 zg | 37 000 000 zg | 38 000 000 zg | 39 000 000 zg | 40 000 000 zg | 41 000 000 zg | 42 000 000 zg | 43 000 000 zg | 44 000 000 zg | 45 000 000 zg | 46 000 000 zg | 47 000 000 zg | 48 000 000 zg | 49 000 000 zg | 50 000 000 zg | 51 000 000 zg | 52 000 000 zg | 53 000 000 zg | 54 000 000 zg | 55 000 000 zg | 56 000 000 zg | 57 000 000 zg | 58 000 000 zg | 59 000 000 zg | 60 000 000 zg | 61 000 000 zg | 62 000 000 zg | 63 000 000 zg | 64 000 000 zg | 65 000 000 zg | 66 000 000 zg | 67 000 000 zg | 68 000 000 zg | 69 000 000 zg | 70 000 000 zg | 71 000 000 zg | 72 000 000 zg | 73 000 000 zg | 74 000 000 zg | 75 000 000 zg | 76 000 000 zg | 77 000 000 zg | 78 000 000 zg | 79 000 000 zg | 80 000 000 zg | 81 000 000 zg | 82 000 000 zg | 83 000 000 zg | 84 000 000 zg | 85 000 000 zg | 86 000 000 zg | 87 000 000 zg | 88 000 000 zg | 89 000 000 zg | 90 000 000 zg | 91 000 000 zg | 92 000 000 zg | 93 000 000 zg | 94 000 000 zg | 95 000 000 zg | 96 000 000 zg | 97 000 000 zg | 98 000 000 zg | 99 000 000 zg | 100 000 000 zg |
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 ≡ 1000000 zeptograms | 11 femtograms ≡ 11000000 zeptograms |
| 2.5 femtograms ≡ 2500000 zeptograms | 12.5 femtograms ≡ 12500000 zeptograms |
| 4 femtograms ≡ 4000000 zeptograms | 14 femtograms ≡ 14000000 zeptograms |
| 5.5 femtograms ≡ 5500000 zeptograms | 15.5 femtograms ≡ 15500000 zeptograms |
| 7 femtograms ≡ 7000000 zeptograms | 17 femtograms ≡ 17000000 zeptograms |
| 8.5 femtograms ≡ 8500000 zeptograms | 18.5 femtograms ≡ 18500000 zeptograms |
| 10 femtograms ≡ 10000000 zeptograms | 20 femtograms ≡ 20000000 zeptograms |
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 ≡ 1.0E-6 femtograms | 11 zeptograms ≡ 1.1E-5 femtograms |
| 2.5 zeptograms ≡ 2.5E-6 femtograms | 12.5 zeptograms ≡ 1.25E-5 femtograms |
| 4 zeptograms ≡ 4.0E-6 femtograms | 14 zeptograms ≡ 1.4E-5 femtograms |
| 5.5 zeptograms ≡ 5.5E-6 femtograms | 15.5 zeptograms ≡ 1.55E-5 femtograms |
| 7 zeptograms ≡ 7.0E-6 femtograms | 17 zeptograms ≡ 1.7E-5 femtograms |
| 8.5 zeptograms ≡ 8.5E-6 femtograms | 18.5 zeptograms ≡ 1.85E-5 femtograms |
| 10 zeptograms ≡ 1.0E-5 femtograms | 20 zeptograms ≡ 2.0E-5 femtograms |
| 1 femtograms ≡ 1 000 000 zeptograms |
| 1 zeptograms ≡ 1.0 × 10-6 femtograms |