ell | 1 ell | 2 ell | 3 ell | 4 ell | 5 ell | 6 ell | 7 ell | 8 ell | 9 ell | 10 ell | 11 ell | 12 ell | 13 ell | 14 ell | 15 ell | 16 ell | 17 ell | 18 ell | 19 ell | 20 ell | 21 ell | 22 ell | 23 ell | 24 ell | 25 ell | 26 ell | 27 ell | 28 ell | 29 ell | 30 ell | 31 ell | 32 ell | 33 ell | 34 ell | 35 ell | 36 ell | 37 ell | 38 ell | 39 ell | 40 ell | 41 ell | 42 ell | 43 ell | 44 ell | 45 ell | 46 ell | 47 ell | 48 ell | 49 ell | 50 ell | 51 ell | 52 ell | 53 ell | 54 ell | 55 ell | 56 ell | 57 ell | 58 ell | 59 ell | 60 ell | 61 ell | 62 ell | 63 ell | 64 ell | 65 ell | 66 ell | 67 ell | 68 ell | 69 ell | 70 ell | 71 ell | 72 ell | 73 ell | 74 ell | 75 ell | 76 ell | 77 ell | 78 ell | 79 ell | 80 ell | 81 ell | 82 ell | 83 ell | 84 ell | 85 ell | 86 ell | 87 ell | 88 ell | 89 ell | 90 ell | 91 ell | 92 ell | 93 ell | 94 ell | 95 ell | 96 ell | 97 ell | 98 ell | 99 ell | 100 ell |
light-year | 1.2081777582429 × 10-16 ly | 2.4163555164857 × 10-16 ly | 3.6245332747286 × 10-16 ly | 4.8327110329714 × 10-16 ly | 6.0408887912143 × 10-16 ly | 7.2490665494571 × 10-16 ly | 8.4572443077 × 10-16 ly | 9.6654220659428 × 10-16 ly | 1.0873599824186 × 10-15 ly | 1.2081777582429 × 10-15 ly | 1.3289955340671 × 10-15 ly | 1.4498133098914 × 10-15 ly | 1.5706310857157 × 10-15 ly | 1.69144886154 × 10-15 ly | 1.8122666373643 × 10-15 ly | 1.9330844131886 × 10-15 ly | 2.0539021890128 × 10-15 ly | 2.1747199648371 × 10-15 ly | 2.2955377406614 × 10-15 ly | 2.4163555164857 × 10-15 ly | 2.53717329231 × 10-15 ly | 2.6579910681343 × 10-15 ly | 2.7788088439586 × 10-15 ly | 2.8996266197828 × 10-15 ly | 3.0204443956071 × 10-15 ly | 3.1412621714314 × 10-15 ly | 3.2620799472557 × 10-15 ly | 3.38289772308 × 10-15 ly | 3.5037154989043 × 10-15 ly | 3.6245332747286 × 10-15 ly | 3.7453510505528 × 10-15 ly | 3.8661688263771 × 10-15 ly | 3.9869866022014 × 10-15 ly | 4.1078043780257 × 10-15 ly | 4.22862215385 × 10-15 ly | 4.3494399296743 × 10-15 ly | 4.4702577054985 × 10-15 ly | 4.5910754813228 × 10-15 ly | 4.7118932571471 × 10-15 ly | 4.8327110329714 × 10-15 ly | 4.9535288087957 × 10-15 ly | 5.07434658462 × 10-15 ly | 5.1951643604443 × 10-15 ly | 5.3159821362685 × 10-15 ly | 5.4367999120928 × 10-15 ly | 5.5576176879171 × 10-15 ly | 5.6784354637414 × 10-15 ly | 5.7992532395657 × 10-15 ly | 5.92007101539 × 10-15 ly | 6.0408887912143 × 10-15 ly | 6.1617065670385 × 10-15 ly | 6.2825243428628 × 10-15 ly | 6.4033421186871 × 10-15 ly | 6.5241598945114 × 10-15 ly | 6.6449776703357 × 10-15 ly | 6.76579544616 × 10-15 ly | 6.8866132219842 × 10-15 ly | 7.0074309978085 × 10-15 ly | 7.1282487736328 × 10-15 ly | 7.2490665494571 × 10-15 ly | 7.3698843252814 × 10-15 ly | 7.4907021011057 × 10-15 ly | 7.61151987693 × 10-15 ly | 7.7323376527542 × 10-15 ly | 7.8531554285785 × 10-15 ly | 7.9739732044028 × 10-15 ly | 8.0947909802271 × 10-15 ly | 8.2156087560514 × 10-15 ly | 8.3364265318757 × 10-15 ly | 8.4572443077 × 10-15 ly | 8.5780620835242 × 10-15 ly | 8.6988798593485 × 10-15 ly | 8.8196976351728 × 10-15 ly | 8.9405154109971 × 10-15 ly | 9.0613331868214 × 10-15 ly | 9.1821509626457 × 10-15 ly | 9.3029687384699 × 10-15 ly | 9.4237865142942 × 10-15 ly | 9.5446042901185 × 10-15 ly | 9.6654220659428 × 10-15 ly | 9.7862398417671 × 10-15 ly | 9.9070576175914 × 10-15 ly | 1.0027875393416 × 10-14 ly | 1.014869316924 × 10-14 ly | 1.0269510945064 × 10-14 ly | 1.0390328720889 × 10-14 ly | 1.0511146496713 × 10-14 ly | 1.0631964272537 × 10-14 ly | 1.0752782048361 × 10-14 ly | 1.0873599824186 × 10-14 ly | 1.099441760001 × 10-14 ly | 1.1115235375834 × 10-14 ly | 1.1236053151659 × 10-14 ly | 1.1356870927483 × 10-14 ly | 1.1477688703307 × 10-14 ly | 1.1598506479131 × 10-14 ly | 1.1719324254956 × 10-14 ly | 1.184014203078 × 10-14 ly | 1.1960959806604 × 10-14 ly | 1.2081777582429 × 10-14 ly |
An ell (from Proto-Germanic *alinō, cognate with Latin ulna) is a unit of measurement, originally a cubit, i.e., approximating the length of a man's arm from the elbow ("elbow" means the bend or bow of the ell or arm) to the tip of the middle finger, or about 18 inches (457 mm); in later usage, any of several longer units.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
ell | ell | ≡ 45 in (In England usually) | = 1.143 m | Other (Length) |
ell | light-years | ell | light-years |
---|---|---|---|
1 | = 1.2081777582429E-16 | 4 | = 4.8327110329714E-16 |
1.5 | = 1.8122666373643E-16 | 4.5 | = 5.4367999120928E-16 |
2 | = 2.4163555164857E-16 | 5 | = 6.0408887912143E-16 |
2.5 | = 3.0204443956071E-16 | 5.5 | = 6.6449776703357E-16 |
3 | = 3.6245332747286E-16 | 6 | = 7.2490665494571E-16 |
The light-year is a unit of length used to express astronomical distances. It is about 9.5 quadrillion metres or 5.9 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days). Because it includes the word "year", the term light-year is sometimes misinterpreted as a unit of time.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
light-year | ly | ≡ Distance light travels in vacuum in 365.25 days | = 9.4607304725808×1015 m | Science - Astronomy (Length) |
light-years | ell | light-years | ell |
---|---|---|---|
1 | = 8.2769277383022E+15 | 4 | = 3.3107710953209E+16 |
1.5 | = 1.2415391607453E+16 | 4.5 | = 3.724617482236E+16 |
2 | = 1.6553855476604E+16 | 5 | = 4.1384638691511E+16 |
2.5 | = 2.0692319345755E+16 | 5.5 | = 4.5523102560662E+16 |
3 | = 2.4830783214907E+16 | 6 | = 4.9661566429813E+16 |
ell | light-years |
---|---|
1 | = 1.2081777582429 × 10-16 |
8.2769277383022 × 1015 | = 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |