light-year | 1 ly | 2 ly | 3 ly | 4 ly | 5 ly | 6 ly | 7 ly | 8 ly | 9 ly | 10 ly | 11 ly | 12 ly | 13 ly | 14 ly | 15 ly | 16 ly | 17 ly | 18 ly | 19 ly | 20 ly | 21 ly | 22 ly | 23 ly | 24 ly | 25 ly | 26 ly | 27 ly | 28 ly | 29 ly | 30 ly | 31 ly | 32 ly | 33 ly | 34 ly | 35 ly | 36 ly | 37 ly | 38 ly | 39 ly | 40 ly | 41 ly | 42 ly | 43 ly | 44 ly | 45 ly | 46 ly | 47 ly | 48 ly | 49 ly | 50 ly | 51 ly | 52 ly | 53 ly | 54 ly | 55 ly | 56 ly | 57 ly | 58 ly | 59 ly | 60 ly | 61 ly | 62 ly | 63 ly | 64 ly | 65 ly | 66 ly | 67 ly | 68 ly | 69 ly | 70 ly | 71 ly | 72 ly | 73 ly | 74 ly | 75 ly | 76 ly | 77 ly | 78 ly | 79 ly | 80 ly | 81 ly | 82 ly | 83 ly | 84 ly | 85 ly | 86 ly | 87 ly | 88 ly | 89 ly | 90 ly | 91 ly | 92 ly | 93 ly | 94 ly | 95 ly | 96 ly | 97 ly | 98 ly | 99 ly | 100 ly |
finger | 4.256705693984 × 1017 finger (US) | 8.513411387968 × 1017 finger (US) | 1.2770117081952 × 1018 finger (US) | 1.7026822775936 × 1018 finger (US) | 2.128352846992 × 1018 finger (US) | 2.5540234163904 × 1018 finger (US) | 2.9796939857888 × 1018 finger (US) | 3.4053645551872 × 1018 finger (US) | 3.8310351245856 × 1018 finger (US) | 4.256705693984 × 1018 finger (US) | 4.6823762633824 × 1018 finger (US) | 5.1080468327808 × 1018 finger (US) | 5.5337174021792 × 1018 finger (US) | 5.9593879715776 × 1018 finger (US) | 6.385058540976 × 1018 finger (US) | 6.8107291103744 × 1018 finger (US) | 7.2363996797728 × 1018 finger (US) | 7.6620702491712 × 1018 finger (US) | 8.0877408185696 × 1018 finger (US) | 8.513411387968 × 1018 finger (US) | 8.9390819573664 × 1018 finger (US) | 9.3647525267648 × 1018 finger (US) | 9.7904230961632 × 1018 finger (US) | 1.0216093665562 × 1019 finger (US) | 1.064176423496 × 1019 finger (US) | 1.1067434804358 × 1019 finger (US) | 1.1493105373757 × 1019 finger (US) | 1.1918775943155 × 1019 finger (US) | 1.2344446512554 × 1019 finger (US) | 1.2770117081952 × 1019 finger (US) | 1.319578765135 × 1019 finger (US) | 1.3621458220749 × 1019 finger (US) | 1.4047128790147 × 1019 finger (US) | 1.4472799359546 × 1019 finger (US) | 1.4898469928944 × 1019 finger (US) | 1.5324140498342 × 1019 finger (US) | 1.5749811067741 × 1019 finger (US) | 1.6175481637139 × 1019 finger (US) | 1.6601152206538 × 1019 finger (US) | 1.7026822775936 × 1019 finger (US) | 1.7452493345334 × 1019 finger (US) | 1.7878163914733 × 1019 finger (US) | 1.8303834484131 × 1019 finger (US) | 1.872950505353 × 1019 finger (US) | 1.9155175622928 × 1019 finger (US) | 1.9580846192326 × 1019 finger (US) | 2.0006516761725 × 1019 finger (US) | 2.0432187331123 × 1019 finger (US) | 2.0857857900522 × 1019 finger (US) | 2.128352846992 × 1019 finger (US) | 2.1709199039318 × 1019 finger (US) | 2.2134869608717 × 1019 finger (US) | 2.2560540178115 × 1019 finger (US) | 2.2986210747514 × 1019 finger (US) | 2.3411881316912 × 1019 finger (US) | 2.383755188631 × 1019 finger (US) | 2.4263222455709 × 1019 finger (US) | 2.4688893025107 × 1019 finger (US) | 2.5114563594505 × 1019 finger (US) | 2.5540234163904 × 1019 finger (US) | 2.5965904733302 × 1019 finger (US) | 2.6391575302701 × 1019 finger (US) | 2.6817245872099 × 1019 finger (US) | 2.7242916441497 × 1019 finger (US) | 2.7668587010896 × 1019 finger (US) | 2.8094257580294 × 1019 finger (US) | 2.8519928149693 × 1019 finger (US) | 2.8945598719091 × 1019 finger (US) | 2.9371269288489 × 1019 finger (US) | 2.9796939857888 × 1019 finger (US) | 3.0222610427286 × 1019 finger (US) | 3.0648280996685 × 1019 finger (US) | 3.1073951566083 × 1019 finger (US) | 3.1499622135481 × 1019 finger (US) | 3.192529270488 × 1019 finger (US) | 3.2350963274278 × 1019 finger (US) | 3.2776633843677 × 1019 finger (US) | 3.3202304413075 × 1019 finger (US) | 3.3627974982473 × 1019 finger (US) | 3.4053645551872 × 1019 finger (US) | 3.447931612127 × 1019 finger (US) | 3.4904986690669 × 1019 finger (US) | 3.5330657260067 × 1019 finger (US) | 3.5756327829465 × 1019 finger (US) | 3.6181998398864 × 1019 finger (US) | 3.6607668968262 × 1019 finger (US) | 3.7033339537661 × 1019 finger (US) | 3.7459010107059 × 1019 finger (US) | 3.7884680676457 × 1019 finger (US) | 3.8310351245856 × 1019 finger (US) | 3.8736021815254 × 1019 finger (US) | 3.9161692384653 × 1019 finger (US) | 3.9587362954051 × 1019 finger (US) | 4.0013033523449 × 1019 finger (US) | 4.0438704092848 × 1019 finger (US) | 4.0864374662246 × 1019 finger (US) | 4.1290045231645 × 1019 finger (US) | 4.1715715801043 × 1019 finger (US) | 4.2141386370441 × 1019 finger (US) | 4.256705693984 × 1019 finger (US) |
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 | finger | light-years | finger |
---|---|---|---|
1 | = 4.256705693984E+17 | 4 | = 1.7026822775936E+18 |
1.5 | = 6.385058540976E+17 | 4.5 | = 1.9155175622928E+18 |
2 | = 8.513411387968E+17 | 5 | = 2.128352846992E+18 |
2.5 | = 1.064176423496E+18 | 5.5 | = 2.3411881316912E+18 |
3 | = 1.2770117081952E+18 | 6 | = 2.5540234163904E+18 |
A finger (sometimes fingerbreadth or finger's breadth) is any of several units of measurement that are approximately the width of an adult human finger, including:
The digit, also known as digitus or digitus transversus (Latin), dactyl (Greek) or dactylus, or finger's breadth — 3⁄4 of an inch or 1⁄16 of a foot.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
finger | finger (US) | ≡ 7⁄8 in | = 0.022225 m | Imperial/US |
finger | light-years | finger | light-years |
---|---|---|---|
1 | = 2.3492345299167E-18 | 4 | = 9.3969381196666E-18 |
1.5 | = 3.523851794875E-18 | 4.5 | = 1.0571555384625E-17 |
2 | = 4.6984690598333E-18 | 5 | = 1.1746172649583E-17 |
2.5 | = 5.8730863247916E-18 | 5.5 | = 1.2920789914542E-17 |
3 | = 7.04770358975E-18 | 6 | = 1.40954071795E-17 |
light-years | finger |
---|---|
1 | = 4.256705693984 × 1017 |
2.3492345299167 × 10-18 | = 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 …) |