millimeter | 1 mm | 2 mm | 3 mm | 4 mm | 5 mm | 6 mm | 7 mm | 8 mm | 9 mm | 10 mm | 11 mm | 12 mm | 13 mm | 14 mm | 15 mm | 16 mm | 17 mm | 18 mm | 19 mm | 20 mm | 21 mm | 22 mm | 23 mm | 24 mm | 25 mm | 26 mm | 27 mm | 28 mm | 29 mm | 30 mm | 31 mm | 32 mm | 33 mm | 34 mm | 35 mm | 36 mm | 37 mm | 38 mm | 39 mm | 40 mm | 41 mm | 42 mm | 43 mm | 44 mm | 45 mm | 46 mm | 47 mm | 48 mm | 49 mm | 50 mm | 51 mm | 52 mm | 53 mm | 54 mm | 55 mm | 56 mm | 57 mm | 58 mm | 59 mm | 60 mm | 61 mm | 62 mm | 63 mm | 64 mm | 65 mm | 66 mm | 67 mm | 68 mm | 69 mm | 70 mm | 71 mm | 72 mm | 73 mm | 74 mm | 75 mm | 76 mm | 77 mm | 78 mm | 79 mm | 80 mm | 81 mm | 82 mm | 83 mm | 84 mm | 85 mm | 86 mm | 87 mm | 88 mm | 89 mm | 90 mm | 91 mm | 92 mm | 93 mm | 94 mm | 95 mm | 96 mm | 97 mm | 98 mm | 99 mm | 100 mm |
light-year | 1.0570234105362 × 10-19 ly | 2.1140468210724 × 10-19 ly | 3.1710702316085 × 10-19 ly | 4.2280936421447 × 10-19 ly | 5.2851170526809 × 10-19 ly | 6.3421404632171 × 10-19 ly | 7.3991638737532 × 10-19 ly | 8.4561872842894 × 10-19 ly | 9.5132106948256 × 10-19 ly | 1.0570234105362 × 10-18 ly | 1.1627257515898 × 10-18 ly | 1.2684280926434 × 10-18 ly | 1.374130433697 × 10-18 ly | 1.4798327747506 × 10-18 ly | 1.5855351158043 × 10-18 ly | 1.6912374568579 × 10-18 ly | 1.7969397979115 × 10-18 ly | 1.9026421389651 × 10-18 ly | 2.0083444800187 × 10-18 ly | 2.1140468210724 × 10-18 ly | 2.219749162126 × 10-18 ly | 2.3254515031796 × 10-18 ly | 2.4311538442332 × 10-18 ly | 2.5368561852868 × 10-18 ly | 2.6425585263404 × 10-18 ly | 2.7482608673941 × 10-18 ly | 2.8539632084477 × 10-18 ly | 2.9596655495013 × 10-18 ly | 3.0653678905549 × 10-18 ly | 3.1710702316085 × 10-18 ly | 3.2767725726621 × 10-18 ly | 3.3824749137158 × 10-18 ly | 3.4881772547694 × 10-18 ly | 3.593879595823 × 10-18 ly | 3.6995819368766 × 10-18 ly | 3.8052842779302 × 10-18 ly | 3.9109866189839 × 10-18 ly | 4.0166889600375 × 10-18 ly | 4.1223913010911 × 10-18 ly | 4.2280936421447 × 10-18 ly | 4.3337959831983 × 10-18 ly | 4.4394983242519 × 10-18 ly | 4.5452006653056 × 10-18 ly | 4.6509030063592 × 10-18 ly | 4.7566053474128 × 10-18 ly | 4.8623076884664 × 10-18 ly | 4.96801002952 × 10-18 ly | 5.0737123705736 × 10-18 ly | 5.1794147116273 × 10-18 ly | 5.2851170526809 × 10-18 ly | 5.3908193937345 × 10-18 ly | 5.4965217347881 × 10-18 ly | 5.6022240758417 × 10-18 ly | 5.7079264168954 × 10-18 ly | 5.813628757949 × 10-18 ly | 5.9193310990026 × 10-18 ly | 6.0250334400562 × 10-18 ly | 6.1307357811098 × 10-18 ly | 6.2364381221634 × 10-18 ly | 6.3421404632171 × 10-18 ly | 6.4478428042707 × 10-18 ly | 6.5535451453243 × 10-18 ly | 6.6592474863779 × 10-18 ly | 6.7649498274315 × 10-18 ly | 6.8706521684851 × 10-18 ly | 6.9763545095388 × 10-18 ly | 7.0820568505924 × 10-18 ly | 7.187759191646 × 10-18 ly | 7.2934615326996 × 10-18 ly | 7.3991638737532 × 10-18 ly | 7.5048662148069 × 10-18 ly | 7.6105685558605 × 10-18 ly | 7.7162708969141 × 10-18 ly | 7.8219732379677 × 10-18 ly | 7.9276755790213 × 10-18 ly | 8.0333779200749 × 10-18 ly | 8.1390802611286 × 10-18 ly | 8.2447826021822 × 10-18 ly | 8.3504849432358 × 10-18 ly | 8.4561872842894 × 10-18 ly | 8.561889625343 × 10-18 ly | 8.6675919663967 × 10-18 ly | 8.7732943074503 × 10-18 ly | 8.8789966485039 × 10-18 ly | 8.9846989895575 × 10-18 ly | 9.0904013306111 × 10-18 ly | 9.1961036716647 × 10-18 ly | 9.3018060127184 × 10-18 ly | 9.407508353772 × 10-18 ly | 9.5132106948256 × 10-18 ly | 9.6189130358792 × 10-18 ly | 9.7246153769328 × 10-18 ly | 9.8303177179864 × 10-18 ly | 9.9360200590401 × 10-18 ly | 1.0041722400094 × 10-17 ly | 1.0147424741147 × 10-17 ly | 1.0253127082201 × 10-17 ly | 1.0358829423255 × 10-17 ly | 1.0464531764308 × 10-17 ly | 1.0570234105362 × 10-17 ly |
The millimetre (International spelling as used by the International Bureau of Weights and Measures; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length. Therefore there are thousand millimetres in a metre. There are ten millimetres in a centimetre.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
millimeter | mm | ≡ 1×10-3 m ≡ 0.001 m | ≡ 1×10-3 m ≡ 0.001 m | Metric system SI |
millimeters | light-years | millimeters | light-years |
---|---|---|---|
1 | = 1.0570234105362E-19 | 4 | = 4.2280936421447E-19 |
1.5 | = 1.5855351158043E-19 | 4.5 | = 4.7566053474128E-19 |
2 | = 2.1140468210724E-19 | 5 | = 5.2851170526809E-19 |
2.5 | = 2.6425585263404E-19 | 5.5 | = 5.813628757949E-19 |
3 | = 3.1710702316085E-19 | 6 | = 6.3421404632171E-19 |
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 | millimeters | light-years | millimeters |
---|---|---|---|
1 | = 9.4605284048794E+18 | 4 | = 3.7842113619518E+19 |
1.5 | = 1.4190792607319E+19 | 4.5 | = 4.2572377821957E+19 |
2 | = 1.8921056809759E+19 | 5 | = 4.7302642024397E+19 |
2.5 | = 2.3651321012198E+19 | 5.5 | = 5.2032906226837E+19 |
3 | = 2.8381585214638E+19 | 6 | = 5.6763170429276E+19 |
millimeters | light-years |
---|---|
1 | = 1.0570234105362 × 10-19 |
9.4605284048794 × 1018 | = 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 …) |