| fathom | 1 ftm | 2 ftm | 3 ftm | 4 ftm | 5 ftm | 6 ftm | 7 ftm | 8 ftm | 9 ftm | 10 ftm | 11 ftm | 12 ftm | 13 ftm | 14 ftm | 15 ftm | 16 ftm | 17 ftm | 18 ftm | 19 ftm | 20 ftm | 21 ftm | 22 ftm | 23 ftm | 24 ftm | 25 ftm | 26 ftm | 27 ftm | 28 ftm | 29 ftm | 30 ftm | 31 ftm | 32 ftm | 33 ftm | 34 ftm | 35 ftm | 36 ftm | 37 ftm | 38 ftm | 39 ftm | 40 ftm | 41 ftm | 42 ftm | 43 ftm | 44 ftm | 45 ftm | 46 ftm | 47 ftm | 48 ftm | 49 ftm | 50 ftm | 51 ftm | 52 ftm | 53 ftm | 54 ftm | 55 ftm | 56 ftm | 57 ftm | 58 ftm | 59 ftm | 60 ftm | 61 ftm | 62 ftm | 63 ftm | 64 ftm | 65 ftm | 66 ftm | 67 ftm | 68 ftm | 69 ftm | 70 ftm | 71 ftm | 72 ftm | 73 ftm | 74 ftm | 75 ftm | 76 ftm | 77 ftm | 78 ftm | 79 ftm | 80 ftm | 81 ftm | 82 ftm | 83 ftm | 84 ftm | 85 ftm | 86 ftm | 87 ftm | 88 ftm | 89 ftm | 90 ftm | 91 ftm | 92 ftm | 93 ftm | 94 ftm | 95 ftm | 96 ftm | 97 ftm | 98 ftm | 99 ftm | 100 ftm |
| light-second | 6.1002201729838 × 10-9 light-second | 1.2200440345968 × 10-8 light-second | 1.8300660518951 × 10-8 light-second | 2.4400880691935 × 10-8 light-second | 3.0501100864919 × 10-8 light-second | 3.6601321037903 × 10-8 light-second | 4.2701541210887 × 10-8 light-second | 4.880176138387 × 10-8 light-second | 5.4901981556854 × 10-8 light-second | 6.1002201729838 × 10-8 light-second | 6.7102421902822 × 10-8 light-second | 7.3202642075806 × 10-8 light-second | 7.9302862248789 × 10-8 light-second | 8.5403082421773 × 10-8 light-second | 9.1503302594757 × 10-8 light-second | 9.7603522767741 × 10-8 light-second | 1.0370374294072 × 10-7 light-second | 1.0980396311371 × 10-7 light-second | 1.1590418328669 × 10-7 light-second | 1.2200440345968 × 10-7 light-second | 1.2810462363266 × 10-7 light-second | 1.3420484380564 × 10-7 light-second | 1.4030506397863 × 10-7 light-second | 1.4640528415161 × 10-7 light-second | 1.525055043246 × 10-7 light-second | 1.5860572449758 × 10-7 light-second | 1.6470594467056 × 10-7 light-second | 1.7080616484355 × 10-7 light-second | 1.7690638501653 × 10-7 light-second | 1.8300660518951 × 10-7 light-second | 1.891068253625 × 10-7 light-second | 1.9520704553548 × 10-7 light-second | 2.0130726570847 × 10-7 light-second | 2.0740748588145 × 10-7 light-second | 2.1350770605443 × 10-7 light-second | 2.1960792622742 × 10-7 light-second | 2.257081464004 × 10-7 light-second | 2.3180836657338 × 10-7 light-second | 2.3790858674637 × 10-7 light-second | 2.4400880691935 × 10-7 light-second | 2.5010902709234 × 10-7 light-second | 2.5620924726532 × 10-7 light-second | 2.623094674383 × 10-7 light-second | 2.6840968761129 × 10-7 light-second | 2.7450990778427 × 10-7 light-second | 2.8061012795725 × 10-7 light-second | 2.8671034813024 × 10-7 light-second | 2.9281056830322 × 10-7 light-second | 2.9891078847621 × 10-7 light-second | 3.0501100864919 × 10-7 light-second | 3.1111122882217 × 10-7 light-second | 3.1721144899516 × 10-7 light-second | 3.2331166916814 × 10-7 light-second | 3.2941188934113 × 10-7 light-second | 3.3551210951411 × 10-7 light-second | 3.4161232968709 × 10-7 light-second | 3.4771254986008 × 10-7 light-second | 3.5381277003306 × 10-7 light-second | 3.5991299020604 × 10-7 light-second | 3.6601321037903 × 10-7 light-second | 3.7211343055201 × 10-7 light-second | 3.78213650725 × 10-7 light-second | 3.8431387089798 × 10-7 light-second | 3.9041409107096 × 10-7 light-second | 3.9651431124395 × 10-7 light-second | 4.0261453141693 × 10-7 light-second | 4.0871475158991 × 10-7 light-second | 4.148149717629 × 10-7 light-second | 4.2091519193588 × 10-7 light-second | 4.2701541210887 × 10-7 light-second | 4.3311563228185 × 10-7 light-second | 4.3921585245483 × 10-7 light-second | 4.4531607262782 × 10-7 light-second | 4.514162928008 × 10-7 light-second | 4.5751651297379 × 10-7 light-second | 4.6361673314677 × 10-7 light-second | 4.6971695331975 × 10-7 light-second | 4.7581717349274 × 10-7 light-second | 4.8191739366572 × 10-7 light-second | 4.880176138387 × 10-7 light-second | 4.9411783401169 × 10-7 light-second | 5.0021805418467 × 10-7 light-second | 5.0631827435766 × 10-7 light-second | 5.1241849453064 × 10-7 light-second | 5.1851871470362 × 10-7 light-second | 5.2461893487661 × 10-7 light-second | 5.3071915504959 × 10-7 light-second | 5.3681937522257 × 10-7 light-second | 5.4291959539556 × 10-7 light-second | 5.4901981556854 × 10-7 light-second | 5.5512003574153 × 10-7 light-second | 5.6122025591451 × 10-7 light-second | 5.6732047608749 × 10-7 light-second | 5.7342069626048 × 10-7 light-second | 5.7952091643346 × 10-7 light-second | 5.8562113660645 × 10-7 light-second | 5.9172135677943 × 10-7 light-second | 5.9782157695241 × 10-7 light-second | 6.039217971254 × 10-7 light-second | 6.1002201729838 × 10-7 light-second |
A fathom is a unit of length in the imperial and the U.S. customary systems equal to 6 feet (1.8288 metres), used especially for measuring the depth of water.
There are two yards (6 feet) in an imperial fathom. Originally the span of a man's outstretched arms, the size of a fathom has varied slightly depending on whether it was defined as a thousandth of an (Admiralty) nautical mile or as a multiple of the imperial yard. Formerly, the term was used for any of several units of length varying around 5–5 1⁄2 feet.
| 1 fathoms = 6.1002201729838E-9 light-seconds | 4 fathoms = 2.4400880691935E-8 light-seconds |
| 1.5 fathoms = 9.1503302594757E-9 light-seconds | 4.5 fathoms = 2.7450990778427E-8 light-seconds |
| 2 fathoms = 1.2200440345968E-8 light-seconds | 5 fathoms = 3.0501100864919E-8 light-seconds |
| 2.5 fathoms = 1.525055043246E-8 light-seconds | 5.5 fathoms = 3.3551210951411E-8 light-seconds |
| 3 fathoms = 1.8300660518951E-8 light-seconds | 6 fathoms = 3.6601321037903E-8 light-seconds |
The light-second is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space in onesecond, and is equal to exactly 299792458 metres (just over 186282 miles).
| 1 light-seconds = 163928509.40507 fathoms | 4 light-seconds = 655714037.6203 fathoms |
| 1.5 light-seconds = 245892764.10761 fathoms | 4.5 light-seconds = 737678292.32283 fathoms |
| 2 light-seconds = 327857018.81015 fathoms | 5 light-seconds = 819642547.02537 fathoms |
| 2.5 light-seconds = 409821273.51269 fathoms | 5.5 light-seconds = 901606801.72791 fathoms |
| 3 light-seconds = 491785528.21522 fathoms | 6 light-seconds = 983571056.43045 fathoms |
| 1 fathoms = 6.1002201729838 × 10-9 light-seconds |
| 1 light-seconds = 163,928,509.40507 fathoms |