| astronomical unit | 1 AU | 2 AU | 3 AU | 4 AU | 5 AU | 6 AU | 7 AU | 8 AU | 9 AU | 10 AU | 11 AU | 12 AU | 13 AU | 14 AU | 15 AU | 16 AU | 17 AU | 18 AU | 19 AU | 20 AU | 21 AU | 22 AU | 23 AU | 24 AU | 25 AU | 26 AU | 27 AU | 28 AU | 29 AU | 30 AU | 31 AU | 32 AU | 33 AU | 34 AU | 35 AU | 36 AU | 37 AU | 38 AU | 39 AU | 40 AU | 41 AU | 42 AU | 43 AU | 44 AU | 45 AU | 46 AU | 47 AU | 48 AU | 49 AU | 50 AU | 51 AU | 52 AU | 53 AU | 54 AU | 55 AU | 56 AU | 57 AU | 58 AU | 59 AU | 60 AU | 61 AU | 62 AU | 63 AU | 64 AU | 65 AU | 66 AU | 67 AU | 68 AU | 69 AU | 70 AU | 71 AU | 72 AU | 73 AU | 74 AU | 75 AU | 76 AU | 77 AU | 78 AU | 79 AU | 80 AU | 81 AU | 82 AU | 83 AU | 84 AU | 85 AU | 86 AU | 87 AU | 88 AU | 89 AU | 90 AU | 91 AU | 92 AU | 93 AU | 94 AU | 95 AU | 96 AU | 97 AU | 98 AU | 99 AU | 100 AU |
| fathom | 81,801,110,400.262 ftm | 163,602,220,800.52 ftm | 245,403,331,200.79 ftm | 327,204,441,601.05 ftm | 409,005,552,001.31 ftm | 490,806,662,401.57 ftm | 572,607,772,801.84 ftm | 654,408,883,202.1 ftm | 736,209,993,602.36 ftm | 818,011,104,002.62 ftm | 899,812,214,402.89 ftm | 981,613,324,803.15 ftm | 1,063,414,435,203.4 ftm | 1,145,215,545,603.7 ftm | 1,227,016,656,003.9 ftm | 1,308,817,766,404.2 ftm | 1,390,618,876,804.5 ftm | 1,472,419,987,204.7 ftm | 1 554 221 097 605 ftm | 1,636,022,208,005.2 ftm | 1,717,823,318,405.5 ftm | 1,799,624,428,805.8 ftm | 1 881 425 539 206 ftm | 1,963,226,649,606.3 ftm | 2,045,027,760,006.6 ftm | 2,126,828,870,406.8 ftm | 2,208,629,980,807.1 ftm | 2,290,431,091,207.3 ftm | 2,372,232,201,607.6 ftm | 2,454,033,312,007.9 ftm | 2,535,834,422,408.1 ftm | 2,617,635,532,808.4 ftm | 2,699,436,643,208.7 ftm | 2,781,237,753,608.9 ftm | 2,863,038,864,009.2 ftm | 2,944,839,974,409.4 ftm | 3,026,641,084,809.7 ftm | 3 108 442 195 210 ftm | 3,190,243,305,610.2 ftm | 3,272,044,416,010.5 ftm | 3,353,845,526,410.8 ftm | 3 435 646 636 811 ftm | 3,517,447,747,211.3 ftm | 3,599,248,857,611.5 ftm | 3,681,049,968,011.8 ftm | 3,762,851,078,412.1 ftm | 3,844,652,188,812.3 ftm | 3,926,453,299,212.6 ftm | 4,008,254,409,612.9 ftm | 4,090,055,520,013.1 ftm | 4,171,856,630,413.4 ftm | 4,253,657,740,813.6 ftm | 4,335,458,851,213.9 ftm | 4,417,259,961,614.2 ftm | 4,499,061,072,014.4 ftm | 4,580,862,182,414.7 ftm | 4 662 663 292 815 ftm | 4,744,464,403,215.2 ftm | 4,826,265,513,615.5 ftm | 4,908,066,624,015.7 ftm | 4 989 867 734 416 ftm | 5,071,668,844,816.3 ftm | 5,153,469,955,216.5 ftm | 5,235,271,065,616.8 ftm | 5,317,072,176,017.1 ftm | 5,398,873,286,417.3 ftm | 5,480,674,396,817.6 ftm | 5,562,475,507,217.8 ftm | 5,644,276,617,618.1 ftm | 5,726,077,728,018.4 ftm | 5,807,878,838,418.6 ftm | 5,889,679,948,818.9 ftm | 5,971,481,059,219.2 ftm | 6,053,282,169,619.4 ftm | 6,135,083,280,019.7 ftm | 6,216,884,390,419.9 ftm | 6,298,685,500,820.2 ftm | 6,380,486,611,220.5 ftm | 6,462,287,721,620.7 ftm | 6 544 088 832 021 ftm | 6,625,889,942,421.3 ftm | 6,707,691,052,821.5 ftm | 6,789,492,163,221.8 ftm | 6 871 293 273 622 ftm | 6,953,094,384,022.3 ftm | 7,034,895,494,422.6 ftm | 7,116,696,604,822.8 ftm | 7,198,497,715,223.1 ftm | 7,280,298,825,623.4 ftm | 7,362,099,936,023.6 ftm | 7,443,901,046,423.9 ftm | 7,525,702,156,824.1 ftm | 7,607,503,267,224.4 ftm | 7,689,304,377,624.7 ftm | 7,771,105,488,024.9 ftm | 7,852,906,598,425.2 ftm | 7,934,707,708,825.5 ftm | 8,016,508,819,225.7 ftm | 8 098 309 929 626 ftm | 8,180,111,040,026.2 ftm |
The astronomical unit (symbol: au or ua) is a unit of length, roughly the distance from Earth to the Sun. However, that distance varies as Earth orbits the Sun, from a maximum (aphelion) to a minimum (perihelion) and back again once a year. Originally conceived as the average of Earth's aphelion and perihelion, it is now defined as exactly 149 597 870 700 metres (about 150 million kilometres, or 93 million miles). The astronomical unit is used primarily as a convenient yardstick for measuring distances within the Solar System or around other stars. However, it is also a fundamental component in the definition of another unit of astronomical length, the parsec.
| 1 astronomical units = 81801110400.262 fathoms | 4 astronomical units = 327204441601.05 fathoms |
| 1.5 astronomical units = 122701665600.39 fathoms | 4.5 astronomical units = 368104996801.18 fathoms |
| 2 astronomical units = 163602220800.52 fathoms | 5 astronomical units = 409005552001.31 fathoms |
| 2.5 astronomical units = 204502776000.66 fathoms | 5.5 astronomical units = 449906107201.44 fathoms |
| 3 astronomical units = 245403331200.79 fathoms | 6 astronomical units = 490806662401.57 fathoms |
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 = 1.2224772929205E-11 astronomical units | 4 fathoms = 4.8899091716818E-11 astronomical units |
| 1.5 fathoms = 1.8337159393807E-11 astronomical units | 4.5 fathoms = 5.501147818142E-11 astronomical units |
| 2 fathoms = 2.4449545858409E-11 astronomical units | 5 fathoms = 6.1123864646023E-11 astronomical units |
| 2.5 fathoms = 3.0561932323011E-11 astronomical units | 5.5 fathoms = 6.7236251110625E-11 astronomical units |
| 3 fathoms = 3.6674318787614E-11 astronomical units | 6 fathoms = 7.3348637575227E-11 astronomical units |
| 1 astronomical units = 81,801,110,400.262 fathoms |
| 1 fathoms = 1.2224772929205 × 10-11 astronomical units |