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Astronomical units Conversion

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

Astronomical units

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.

DefinitionRelation to SI units

≡ 149 597 870 700 m ≈ Distance from Earth to Sun

Quick Find Conversion

Astronomical units 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 astronomical units= 149597870700 meters
1.5 astronomical units= 224396806050 meters
2 astronomical units= 299195741400 meters
2.5 astronomical units= 373994676750 meters
3 astronomical units= 448793612100 meters