bookmark

Light-years Conversion

light-year conversion allows you find conversion from light-year to other units of length, and you can find more additional light-year information as the following.

Light-years

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.

DefinitionRelation to SI units

≡ Distance light travels in vacuum in 365.25 days

Quick Find Conversion

Light-years to

Conversion table

finger (cloth)cubithectometerfrench; charriereattometerzettametermicronearth radius
1 0.2286 0.001143 342.9 1.143 × 1017 1.143 × 10-22 114 300 1.7940668654842 × 10-8
4.3744532 1 0.005 1 500 5.0 × 1017 5.0 × 10-22 500 000 7.8480615288024 × 10-8
874.8906387 200 1 300 000 1.0 × 1020 1.0 × 10-19 100 000 000 1.5696123057605 × 10-5
0.0029163 0.0006667 3.3333333333333 × 10-6 1 3.3333333333333 × 1014 3.3333333333333 × 10-25 333.3333333 5.2320410192016 × 10-11
8.7489063867017 × 10-18 2.0 × 10-18 1.0 × 10-20 3.0 × 10-15 1 1.0 × 10-39 1.0 × 10-12 1.5696123057605 × 10-25
8.7489063867017 × 1021 2.0 × 1021 1.0 × 1019 3.0 × 1024 1.0 × 1039 1 1.0 × 1027 1.5696123057605 × 1014
8.7489063867017 × 10-6 2.0 × 10-6 1.0 × 10-8 0.003 1 000 000 000 000 1.0 × 10-27 1 1.5696123057605 × 10-13
55,739,282.589676 12 742 000 63 710 19 113 000 000 6.371 × 1024 6.371 × 10-15 6 371 000 000 000 1

Legend

SymbolDefinition
exactly equal
approximately equal to
=equal to
digitsindicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …)

Unit System

Science - Astronomy (Length)

SI Conversion Table

1 light-years= 9.4605284048794E+15 meters
1.5 light-years= 1.4190792607319E+16 meters
2 light-years= 1.8921056809759E+16 meters
2.5 light-years= 2.3651321012198E+16 meters
3 light-years= 2.8381585214638E+16 meters