| long ton | 1 long tn | 2 long tn | 3 long tn | 4 long tn | 5 long tn | 6 long tn | 7 long tn | 8 long tn | 9 long tn | 10 long tn | 11 long tn | 12 long tn | 13 long tn | 14 long tn | 15 long tn | 16 long tn | 17 long tn | 18 long tn | 19 long tn | 20 long tn | 21 long tn | 22 long tn | 23 long tn | 24 long tn | 25 long tn | 26 long tn | 27 long tn | 28 long tn | 29 long tn | 30 long tn | 31 long tn | 32 long tn | 33 long tn | 34 long tn | 35 long tn | 36 long tn | 37 long tn | 38 long tn | 39 long tn | 40 long tn | 41 long tn | 42 long tn | 43 long tn | 44 long tn | 45 long tn | 46 long tn | 47 long tn | 48 long tn | 49 long tn | 50 long tn | 51 long tn | 52 long tn | 53 long tn | 54 long tn | 55 long tn | 56 long tn | 57 long tn | 58 long tn | 59 long tn | 60 long tn | 61 long tn | 62 long tn | 63 long tn | 64 long tn | 65 long tn | 66 long tn | 67 long tn | 68 long tn | 69 long tn | 70 long tn | 71 long tn | 72 long tn | 73 long tn | 74 long tn | 75 long tn | 76 long tn | 77 long tn | 78 long tn | 79 long tn | 80 long tn | 81 long tn | 82 long tn | 83 long tn | 84 long tn | 85 long tn | 86 long tn | 87 long tn | 88 long tn | 89 long tn | 90 long tn | 91 long tn | 92 long tn | 93 long tn | 94 long tn | 95 long tn | 96 long tn | 97 long tn | 98 long tn | 99 long tn | 100 long tn |
| femtogram | 1.01604691 × 1021 fg | 2.03209382 × 1021 fg | 3.04814073 × 1021 fg | 4.06418764 × 1021 fg | 5.08023455 × 1021 fg | 6.09628146 × 1021 fg | 7.11232837 × 1021 fg | 8.12837528 × 1021 fg | 9.14442219 × 1021 fg | 1.01604691 × 1022 fg | 1.117651601 × 1022 fg | 1.219256292 × 1022 fg | 1.320860983 × 1022 fg | 1.422465674 × 1022 fg | 1.524070365 × 1022 fg | 1.625675056 × 1022 fg | 1.727279747 × 1022 fg | 1.828884438 × 1022 fg | 1.930489129 × 1022 fg | 2.03209382 × 1022 fg | 2.133698511 × 1022 fg | 2.235303202 × 1022 fg | 2.336907893 × 1022 fg | 2.438512584 × 1022 fg | 2.540117275 × 1022 fg | 2.641721966 × 1022 fg | 2.743326657 × 1022 fg | 2.844931348 × 1022 fg | 2.946536039 × 1022 fg | 3.04814073 × 1022 fg | 3.149745421 × 1022 fg | 3.251350112 × 1022 fg | 3.352954803 × 1022 fg | 3.454559494 × 1022 fg | 3.556164185 × 1022 fg | 3.657768876 × 1022 fg | 3.759373567 × 1022 fg | 3.860978258 × 1022 fg | 3.962582949 × 1022 fg | 4.06418764 × 1022 fg | 4.165792331 × 1022 fg | 4.267397022 × 1022 fg | 4.369001713 × 1022 fg | 4.470606404 × 1022 fg | 4.572211095 × 1022 fg | 4.673815786 × 1022 fg | 4.775420477 × 1022 fg | 4.877025168 × 1022 fg | 4.978629859 × 1022 fg | 5.08023455 × 1022 fg | 5.181839241 × 1022 fg | 5.283443932 × 1022 fg | 5.385048623 × 1022 fg | 5.486653314 × 1022 fg | 5.588258005 × 1022 fg | 5.689862696 × 1022 fg | 5.791467387 × 1022 fg | 5.893072078 × 1022 fg | 5.994676769 × 1022 fg | 6.09628146 × 1022 fg | 6.197886151 × 1022 fg | 6.299490842 × 1022 fg | 6.401095533 × 1022 fg | 6.502700224 × 1022 fg | 6.604304915 × 1022 fg | 6.705909606 × 1022 fg | 6.807514297 × 1022 fg | 6.909118988 × 1022 fg | 7.010723679 × 1022 fg | 7.11232837 × 1022 fg | 7.213933061 × 1022 fg | 7.315537752 × 1022 fg | 7.417142443 × 1022 fg | 7.518747134 × 1022 fg | 7.620351825 × 1022 fg | 7.721956516 × 1022 fg | 7.823561207 × 1022 fg | 7.925165898 × 1022 fg | 8.026770589 × 1022 fg | 8.12837528 × 1022 fg | 8.229979971 × 1022 fg | 8.331584662 × 1022 fg | 8.433189353 × 1022 fg | 8.534794044 × 1022 fg | 8.636398735 × 1022 fg | 8.738003426 × 1022 fg | 8.839608117 × 1022 fg | 8.941212808 × 1022 fg | 9.042817499 × 1022 fg | 9.14442219 × 1022 fg | 9.246026881 × 1022 fg | 9.347631572 × 1022 fg | 9.449236263 × 1022 fg | 9.550840954 × 1022 fg | 9.652445645 × 1022 fg | 9.754050336 × 1022 fg | 9.855655027 × 1022 fg | 9.957259718 × 1022 fg | 1.0058864409 × 1023 fg | 1.01604691 × 1023 fg |
Long ton, also known as the imperial ton or displacement ton is the name for the unit called the "ton" in the avoirdupois or Imperial system of measurements standardised in the thirteenth century that is used in the United Kingdom and several other British Commonwealth of Nations countries alongside the mass-based metric tonne defined in 1799.
| 1 long tons = 1.01604691E+21 femtograms | 11 long tons = 1.117651601E+22 femtograms |
| 2.5 long tons = 2.540117275E+21 femtograms | 12.5 long tons = 1.2700586375E+22 femtograms |
| 4 long tons = 4.06418764E+21 femtograms | 14 long tons = 1.422465674E+22 femtograms |
| 5.5 long tons = 5.588258005E+21 femtograms | 15.5 long tons = 1.5748727105E+22 femtograms |
| 7 long tons = 7.11232837E+21 femtograms | 17 long tons = 1.727279747E+22 femtograms |
| 8.5 long tons = 8.636398735E+21 femtograms | 18.5 long tons = 1.8796867835E+22 femtograms |
| 10 long tons = 1.01604691E+22 femtograms | 20 long tons = 2.03209382E+22 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 = 9.8420652644867E-22 long tons | 11 femtograms = 1.0826271790935E-20 long tons |
| 2.5 femtograms = 2.4605163161217E-21 long tons | 12.5 femtograms = 1.2302581580608E-20 long tons |
| 4 femtograms = 3.9368261057947E-21 long tons | 14 femtograms = 1.3778891370281E-20 long tons |
| 5.5 femtograms = 5.4131358954677E-21 long tons | 15.5 femtograms = 1.5255201159954E-20 long tons |
| 7 femtograms = 6.8894456851407E-21 long tons | 17 femtograms = 1.6731510949627E-20 long tons |
| 8.5 femtograms = 8.3657554748137E-21 long tons | 18.5 femtograms = 1.82078207393E-20 long tons |
| 10 femtograms = 9.8420652644867E-21 long tons | 20 femtograms = 1.9684130528973E-20 long tons |
| 1 long tons = 1.01604691 × 1021 femtograms |
| 1 femtograms = 9.8420652644867 × 10-22 long tons |