Convert astronomical unit to kilometer
Please provide values below to convert astronomical unit [AU, UA] to kilometer [km], or Convert kilometer to astronomical unit.
1 AU, UA = 149597870.7 km. To convert astronomical unit to kilometer, multiply the value by 149597870.7; to go the other way, divide by it (1 km = 6.68458712227e-09 AU, UA). Both units measure length and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 AU, UA = 149597870.7 km
- 1 km = 6.68458712227e-09 AU, UA
- 10 AU, UA = 1495978707 km
- 100 AU, UA = 14959787070 km
How to Convert Astronomical Unit to Kilometer
1 AU, UA = 149597870.7 km
Example: convert 15 AU, UA to km:
15 AU, UA = 15 × 149597870.7 km = 2243968060.5 km
Astronomical Unit to Kilometer Conversion Table
| astronomical unit | kilometer |
|---|---|
| 1 AU, UA | 149597870.7 km |
| 2 AU, UA | 299195741.4 km |
| 3 AU, UA | 448793612.1 km |
| 5 AU, UA | 747989353.5 km |
| 10 AU, UA | 1495978707 km |
| 20 AU, UA | 2991957414 km |
| 50 AU, UA | 7479893535 km |
| 100 AU, UA | 14959787070 km |
| 500 AU, UA | 74798935350 km |
| 1000 AU, UA | 149597870700 km |
Astronomical Unit
The astronomical unit is a unit of length, now defined as exactly 149,597,870,700 meters. It is approximately the average distance between the Earth and the Sun.
History/Origin
Historically, the astronomical unit was the mean Earth-Sun distance. In 2012, the International Astronomical Union (IAU) redefined it as a fixed constant.
Current Use
The astronomical unit is used primarily for measuring distances within the Solar System or around other stars.
Kilometer
A kilometer is a unit of length in the metric system, equal to one thousand meters.
History/Origin
The term "kilometer" is derived from the Greek words "khilioi" (thousand) and "metron" (measure). The kilometer was first defined as part of the metric system in France in 1795.
Current Use
The kilometer is the most widely used unit of distance for road signs and travel distances in the world, with the notable exceptions of the United States and the United Kingdom.
Frequently Asked Questions
What is 1 astronomical unit in kilometer?
1 astronomical unit (AU, UA) = 149597870.7 kilometer (km).
How do you convert astronomical unit to kilometer?
Multiply the astronomical unit value by 149597870.7. For example, 25 AU, UA × 149597870.7 = 3739946767.5 km.
What is 10 astronomical unit in kilometer?
10 AU, UA = 1495978707 km.
Which unit is larger, the astronomical unit or the kilometer?
The astronomical unit is the larger unit: 1 AU, UA = 149597870.7 km.