Quick Find Conversion

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.

Conversion table

pacegigameterleague (land)zettameterrodfingerspathand
1 7.62 × 10-10 0.0001578 7.62 × 10-22 0.1515152 34.2857143 7.62 × 10-13 7.5
1,312,335,958.0052 1 207,125.1035626 1.0 × 10-12 198,838,781.51595 44,994,375,703.037 0.001 9,842,519,685.0394
6,335.9580052 4.828 × 10-6 1 4.828 × 10-18 959.9936372 217,232.8458943 4.828 × 10-9 47,519.6850394
1.3123359580052 × 1021 1 000 000 000 000 2.0712510356255 × 1017 1 1.9883878151595 × 1020 4.4994375703037 × 1022 1 000 000 000 9.8425196850394 × 1021
6.6 5.0292 × 10-9 0.0010417 5.0292 × 10-21 1 226.2857143 5.0292 × 10-12 49.5
0.0291667 2.2225 × 10-11 4.6033554266777 × 10-6 2.2225 × 10-23 0.0044192 1 2.2225 × 10-14 0.21875
1,312,335,958,005.2 1 000 207,125,103.56255 1.0 × 10-9 198,838,781,515.95 44 994 375 703 037 1 9,842,519,685,039.4
0.1333333 1.016 × 10-10 2.1043910521955 × 10-5 1.016 × 10-22 0.0202020 4.5714286 1.016 × 10-13 1

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