Astronomical unit (au)
The mean Earth–Sun distance, exactly 149,597,870,700 meters.
Result
1 astronomical unit = 149,597,870,700,000 millimeters
Astronomical unit at a glance
| Unit name | Astronomical unit (plural: astronomical units) |
|---|---|
| Symbol | au |
| Quantity measured | Length |
| Measurement system | SI |
| Also known as | au, ua |
| Definition exact? | Yes — exact by definition |
1 astronomical unit in other length units
| Unit | 1 au equals |
|---|---|
| Nanometer | 1.49597871 × 10²⁰ nm |
| Micrometer | 1.49597871 × 10¹⁷ µm |
| Millimeter | 149,597,870,700,000 mm |
| Centimeter | 14,959,787,070,000 cm |
| Decimeter | 1,495,978,707,000 dm |
| Meter | 149,597,870,700 m |
| Kilometer | 149,597,871 km |
| Inch | 5,889,679,948,819 in |
| Foot | 490,806,662,402 ft |
| Yard | 163,602,220,801 yd |
| Mile | 92,955,807.3 mi |
| Nautical mile | 80,776,388.1 nmi |
| Angstrom | 1.49597871 × 10²¹ Å |
| Mil | 5.88967995 × 10¹⁵ mil |
| Fathom | 81,801,110,400 ftm |
| Rod | 29,745,858,327 rd |
| Chain | 7,436,464,582 ch |
| Furlong | 743,646,458 fur |
| League | 30,985,269.1 lea |
| Light-year | 0.000015813 ly |
| Parsec | 0.000004848 pc |
Frequently asked questions
- What is a astronomical unit?
- The mean Earth–Sun distance, exactly 149,597,870,700 meters.
- What is the symbol for the astronomical unit?
- The symbol for the astronomical unit is au. It measures length.
- How many millimeters are in a astronomical unit?
- 1 astronomical unit = 149,597,870,700,000 millimeters.
- How many centimeters are in a astronomical unit?
- 1 astronomical unit = 14,959,787,070,000 centimeters.
- How many meters are in a astronomical unit?
- 1 astronomical unit = 149,597,870,700 meters.