| 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 |
| long hundredweight | 1.9684130552221 × 10-20 long cwt | 3.9368261104442 × 10-20 long cwt | 5.9052391656664 × 10-20 long cwt | 7.8736522208885 × 10-20 long cwt | 9.8420652761106 × 10-20 long cwt | 1.1810478331333 × 10-19 long cwt | 1.3778891386555 × 10-19 long cwt | 1.5747304441777 × 10-19 long cwt | 1.7715717496999 × 10-19 long cwt | 1.9684130552221 × 10-19 long cwt | 2.1652543607443 × 10-19 long cwt | 2.3620956662665 × 10-19 long cwt | 2.5589369717888 × 10-19 long cwt | 2.755778277311 × 10-19 long cwt | 2.9526195828332 × 10-19 long cwt | 3.1494608883554 × 10-19 long cwt | 3.3463021938776 × 10-19 long cwt | 3.5431434993998 × 10-19 long cwt | 3.739984804922 × 10-19 long cwt | 3.9368261104442 × 10-19 long cwt | 4.1336674159665 × 10-19 long cwt | 4.3305087214887 × 10-19 long cwt | 4.5273500270109 × 10-19 long cwt | 4.7241913325331 × 10-19 long cwt | 4.9210326380553 × 10-19 long cwt | 5.1178739435775 × 10-19 long cwt | 5.3147152490997 × 10-19 long cwt | 5.5115565546219 × 10-19 long cwt | 5.7083978601442 × 10-19 long cwt | 5.9052391656664 × 10-19 long cwt | 6.1020804711886 × 10-19 long cwt | 6.2989217767108 × 10-19 long cwt | 6.495763082233 × 10-19 long cwt | 6.6926043877552 × 10-19 long cwt | 6.8894456932774 × 10-19 long cwt | 7.0862869987996 × 10-19 long cwt | 7.2831283043218 × 10-19 long cwt | 7.4799696098441 × 10-19 long cwt | 7.6768109153663 × 10-19 long cwt | 7.8736522208885 × 10-19 long cwt | 8.0704935264107 × 10-19 long cwt | 8.2673348319329 × 10-19 long cwt | 8.4641761374551 × 10-19 long cwt | 8.6610174429773 × 10-19 long cwt | 8.8578587484995 × 10-19 long cwt | 9.0547000540218 × 10-19 long cwt | 9.251541359544 × 10-19 long cwt | 9.4483826650662 × 10-19 long cwt | 9.6452239705884 × 10-19 long cwt | 9.8420652761106 × 10-19 long cwt | 1.0038906581633 × 10-18 long cwt | 1.0235747887155 × 10-18 long cwt | 1.0432589192677 × 10-18 long cwt | 1.0629430498199 × 10-18 long cwt | 1.0826271803722 × 10-18 long cwt | 1.1023113109244 × 10-18 long cwt | 1.1219954414766 × 10-18 long cwt | 1.1416795720288 × 10-18 long cwt | 1.1613637025811 × 10-18 long cwt | 1.1810478331333 × 10-18 long cwt | 1.2007319636855 × 10-18 long cwt | 1.2204160942377 × 10-18 long cwt | 1.2401002247899 × 10-18 long cwt | 1.2597843553422 × 10-18 long cwt | 1.2794684858944 × 10-18 long cwt | 1.2991526164466 × 10-18 long cwt | 1.3188367469988 × 10-18 long cwt | 1.338520877551 × 10-18 long cwt | 1.3582050081033 × 10-18 long cwt | 1.3778891386555 × 10-18 long cwt | 1.3975732692077 × 10-18 long cwt | 1.4172573997599 × 10-18 long cwt | 1.4369415303121 × 10-18 long cwt | 1.4566256608644 × 10-18 long cwt | 1.4763097914166 × 10-18 long cwt | 1.4959939219688 × 10-18 long cwt | 1.515678052521 × 10-18 long cwt | 1.5353621830733 × 10-18 long cwt | 1.5550463136255 × 10-18 long cwt | 1.5747304441777 × 10-18 long cwt | 1.5944145747299 × 10-18 long cwt | 1.6140987052821 × 10-18 long cwt | 1.6337828358344 × 10-18 long cwt | 1.6534669663866 × 10-18 long cwt | 1.6731510969388 × 10-18 long cwt | 1.692835227491 × 10-18 long cwt | 1.7125193580432 × 10-18 long cwt | 1.7322034885955 × 10-18 long cwt | 1.7518876191477 × 10-18 long cwt | 1.7715717496999 × 10-18 long cwt | 1.7912558802521 × 10-18 long cwt | 1.8109400108044 × 10-18 long cwt | 1.8306241413566 × 10-18 long cwt | 1.8503082719088 × 10-18 long cwt | 1.869992402461 × 10-18 long cwt | 1.8896765330132 × 10-18 long cwt | 1.9093606635655 × 10-18 long cwt | 1.9290447941177 × 10-18 long cwt | 1.9487289246699 × 10-18 long cwt | 1.9684130552221 × 10-18 long cwt |
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 = 1.9684130552221E-20 long hundredweights | 11 femtograms = 2.1652543607443E-19 long hundredweights |
| 2.5 femtograms = 4.9210326380553E-20 long hundredweights | 12.5 femtograms = 2.4605163190277E-19 long hundredweights |
| 4 femtograms = 7.8736522208885E-20 long hundredweights | 14 femtograms = 2.755778277311E-19 long hundredweights |
| 5.5 femtograms = 1.0826271803722E-19 long hundredweights | 15.5 femtograms = 3.0510402355943E-19 long hundredweights |
| 7 femtograms = 1.3778891386555E-19 long hundredweights | 17 femtograms = 3.3463021938776E-19 long hundredweights |
| 8.5 femtograms = 1.6731510969388E-19 long hundredweights | 18.5 femtograms = 3.6415641521609E-19 long hundredweights |
| 10 femtograms = 1.9684130552221E-19 long hundredweights | 20 femtograms = 3.9368261104442E-19 long hundredweights |
The long or imperial hundredweight of 8 stone (112 lb or 50.802345 kg) sees informal use in the imperial system but according to Schedule 1, Part VI of the Weights and Measures Act 1985, is no longer to be used for trade after the Act came into force.
| 1 long hundredweights = 5.080234544E+19 femtograms | 11 long hundredweights = 5.5882579984E+20 femtograms |
| 2.5 long hundredweights = 1.270058636E+20 femtograms | 12.5 long hundredweights = 6.35029318E+20 femtograms |
| 4 long hundredweights = 2.0320938176E+20 femtograms | 14 long hundredweights = 7.1123283616E+20 femtograms |
| 5.5 long hundredweights = 2.7941289992E+20 femtograms | 15.5 long hundredweights = 7.8743635432E+20 femtograms |
| 7 long hundredweights = 3.5561641808E+20 femtograms | 17 long hundredweights = 8.6363987248E+20 femtograms |
| 8.5 long hundredweights = 4.3181993624E+20 femtograms | 18.5 long hundredweights = 9.3984339064E+20 femtograms |
| 10 long hundredweights = 5.080234544E+20 femtograms | 20 long hundredweights = 1.0160469088E+21 femtograms |
| 1 femtograms = 1.9684130552221 × 10-20 long hundredweights |
| 1 long hundredweights = 5.080234544 × 1019 femtograms |