| fermtometer | 1 fm | 2 fm | 3 fm | 4 fm | 5 fm | 6 fm | 7 fm | 8 fm | 9 fm | 10 fm | 11 fm | 12 fm | 13 fm | 14 fm | 15 fm | 16 fm | 17 fm | 18 fm | 19 fm | 20 fm | 21 fm | 22 fm | 23 fm | 24 fm | 25 fm | 26 fm | 27 fm | 28 fm | 29 fm | 30 fm | 31 fm | 32 fm | 33 fm | 34 fm | 35 fm | 36 fm | 37 fm | 38 fm | 39 fm | 40 fm | 41 fm | 42 fm | 43 fm | 44 fm | 45 fm | 46 fm | 47 fm | 48 fm | 49 fm | 50 fm | 51 fm | 52 fm | 53 fm | 54 fm | 55 fm | 56 fm | 57 fm | 58 fm | 59 fm | 60 fm | 61 fm | 62 fm | 63 fm | 64 fm | 65 fm | 66 fm | 67 fm | 68 fm | 69 fm | 70 fm | 71 fm | 72 fm | 73 fm | 74 fm | 75 fm | 76 fm | 77 fm | 78 fm | 79 fm | 80 fm | 81 fm | 82 fm | 83 fm | 84 fm | 85 fm | 86 fm | 87 fm | 88 fm | 89 fm | 90 fm | 91 fm | 92 fm | 93 fm | 94 fm | 95 fm | 96 fm | 97 fm | 98 fm | 99 fm | 100 fm |
| league (land) | 2.0712510356255 × 10-19 lea | 4.142502071251 × 10-19 lea | 6.2137531068766 × 10-19 lea | 8.2850041425021 × 10-19 lea | 1.0356255178128 × 10-18 lea | 1.2427506213753 × 10-18 lea | 1.4498757249379 × 10-18 lea | 1.6570008285004 × 10-18 lea | 1.864125932063 × 10-18 lea | 2.0712510356255 × 10-18 lea | 2.2783761391881 × 10-18 lea | 2.4855012427506 × 10-18 lea | 2.6926263463132 × 10-18 lea | 2.8997514498757 × 10-18 lea | 3.1068765534383 × 10-18 lea | 3.3140016570008 × 10-18 lea | 3.5211267605634 × 10-18 lea | 3.7282518641259 × 10-18 lea | 3.9353769676885 × 10-18 lea | 4.142502071251 × 10-18 lea | 4.3496271748136 × 10-18 lea | 4.5567522783761 × 10-18 lea | 4.7638773819387 × 10-18 lea | 4.9710024855012 × 10-18 lea | 5.1781275890638 × 10-18 lea | 5.3852526926263 × 10-18 lea | 5.5923777961889 × 10-18 lea | 5.7995028997514 × 10-18 lea | 6.006628003314 × 10-18 lea | 6.2137531068766 × 10-18 lea | 6.4208782104391 × 10-18 lea | 6.6280033140017 × 10-18 lea | 6.8351284175642 × 10-18 lea | 7.0422535211268 × 10-18 lea | 7.2493786246893 × 10-18 lea | 7.4565037282519 × 10-18 lea | 7.6636288318144 × 10-18 lea | 7.870753935377 × 10-18 lea | 8.0778790389395 × 10-18 lea | 8.2850041425021 × 10-18 lea | 8.4921292460646 × 10-18 lea | 8.6992543496272 × 10-18 lea | 8.9063794531897 × 10-18 lea | 9.1135045567523 × 10-18 lea | 9.3206296603148 × 10-18 lea | 9.5277547638774 × 10-18 lea | 9.7348798674399 × 10-18 lea | 9.9420049710025 × 10-18 lea | 1.0149130074565 × 10-17 lea | 1.0356255178128 × 10-17 lea | 1.056338028169 × 10-17 lea | 1.0770505385253 × 10-17 lea | 1.0977630488815 × 10-17 lea | 1.1184755592378 × 10-17 lea | 1.139188069594 × 10-17 lea | 1.1599005799503 × 10-17 lea | 1.1806130903065 × 10-17 lea | 1.2013256006628 × 10-17 lea | 1.2220381110191 × 10-17 lea | 1.2427506213753 × 10-17 lea | 1.2634631317316 × 10-17 lea | 1.2841756420878 × 10-17 lea | 1.3048881524441 × 10-17 lea | 1.3256006628003 × 10-17 lea | 1.3463131731566 × 10-17 lea | 1.3670256835128 × 10-17 lea | 1.3877381938691 × 10-17 lea | 1.4084507042254 × 10-17 lea | 1.4291632145816 × 10-17 lea | 1.4498757249379 × 10-17 lea | 1.4705882352941 × 10-17 lea | 1.4913007456504 × 10-17 lea | 1.5120132560066 × 10-17 lea | 1.5327257663629 × 10-17 lea | 1.5534382767191 × 10-17 lea | 1.5741507870754 × 10-17 lea | 1.5948632974316 × 10-17 lea | 1.6155758077879 × 10-17 lea | 1.6362883181442 × 10-17 lea | 1.6570008285004 × 10-17 lea | 1.6777133388567 × 10-17 lea | 1.6984258492129 × 10-17 lea | 1.7191383595692 × 10-17 lea | 1.7398508699254 × 10-17 lea | 1.7605633802817 × 10-17 lea | 1.7812758906379 × 10-17 lea | 1.8019884009942 × 10-17 lea | 1.8227009113505 × 10-17 lea | 1.8434134217067 × 10-17 lea | 1.864125932063 × 10-17 lea | 1.8848384424192 × 10-17 lea | 1.9055509527755 × 10-17 lea | 1.9262634631317 × 10-17 lea | 1.946975973488 × 10-17 lea | 1.9676884838442 × 10-17 lea | 1.9884009942005 × 10-17 lea | 2.0091135045568 × 10-17 lea | 2.029826014913 × 10-17 lea | 2.0505385252693 × 10-17 lea | 2.0712510356255 × 10-17 lea |
The femtometre (American spelling femtometer, symbol fm derived from the Danish and Norwegian word femten, "fifteen"+Ancient Greek: μέτρον, metrοn, "unit of measurement") is an SI unit of length equal to 10−15 metres, which means a quadrillionth of one. This distance can also be called a fermi and was so named in honour of physicist Enrico Fermi, as it is a typical length-scale of nuclear physics.
| 1 fermtometers = 2.0712510356255E-19 leagues (land) | 4 fermtometers = 8.2850041425021E-19 leagues (land) |
| 1.5 fermtometers = 3.1068765534383E-19 leagues (land) | 4.5 fermtometers = 9.3206296603148E-19 leagues (land) |
| 2 fermtometers = 4.142502071251E-19 leagues (land) | 5 fermtometers = 1.0356255178128E-18 leagues (land) |
| 2.5 fermtometers = 5.1781275890638E-19 leagues (land) | 5.5 fermtometers = 1.139188069594E-18 leagues (land) |
| 3 fermtometers = 6.2137531068766E-19 leagues (land) | 6 fermtometers = 1.2427506213753E-18 leagues (land) |
A league is a unit of length (or, in various regions, area). It was common in Europe and Latin America, but is no longer an official unit in any nation. The word originally meant the distance a person could walk in an hour. Since the Middle Ages, many values have been specified in several countries.
| 1 leagues (land) = 4.828E+18 fermtometers | 4 leagues (land) = 1.9312E+19 fermtometers |
| 1.5 leagues (land) = 7.242E+18 fermtometers | 4.5 leagues (land) = 2.1726E+19 fermtometers |
| 2 leagues (land) = 9.656E+18 fermtometers | 5 leagues (land) = 2.414E+19 fermtometers |
| 2.5 leagues (land) = 1.207E+19 fermtometers | 5.5 leagues (land) = 2.6554E+19 fermtometers |
| 3 leagues (land) = 1.4484E+19 fermtometers | 6 leagues (land) = 2.8968E+19 fermtometers |
| 1 fermtometers = 2.0712510356255 × 10-19 leagues (land) |
| 1 leagues (land) = 4.828 × 1018 fermtometers |