Convert AU to km
Enter the number of astronomical units that you want to convert to kilometers.
How to Convert Astronomical Units to Kilometers
The astronomical unit and kilometer are both units of length. By definition, 1 astronomical unit equals exactly 149600000 kilometers. This means to convert astronomical units to kilometers, you multiply by 149600000.
Formula
Step-by-Step Example
Convert 5 AU to kilometers:
We need to convert astronomical units to kilometers
Since 1 AU = 149600000 km, multiply by 149600000
5 × 149600000 = 748000000
5 AU = 748000000 km
Astronomical Unit to Kilometer Conversion Table
Quick reference table for common astronomical unit to kilometer conversions. Click any value for detailed calculation.
| Astronomical Units (AU) | Kilometers (km) |
|---|---|
| 0.1 AU | 14960000 km |
| 0.5 AU | 74800000 km |
| 1 AU | 149600000 km |
| 2 AU | 299200000 km |
| 5 AU | 748000000 km |
| 10 AU | 1496000000 km |
| 25 AU | 3740000000 km |
| 50 AU | 7480000000 km |
| 100 AU | 14960000000 km |
About These Units
Astronomical Unit (AU)
An astronomical unit (AU) is the average distance from Earth to the Sun: approximately 149.6 million kilometers or 93 million miles. AUs measure distances within our solar system. Mars is 1.52 AU from the Sun, Jupiter is 5.2 AU.
Kilometer (km)
A kilometer (km) is a metric unit of length equal to 1,000 meters or approximately 0.621 miles. Kilometers are the standard unit for measuring road distances, running races, and geographic distances in most countries worldwide. Common conversions: 1 km = 0.621 miles, 1 mile = 1.609 km.
Frequently Asked Questions
How do I convert astronomical units to kilometers?
To convert astronomical units to kilometers, multiply the value by 149600000. For example, 10 AU = 1496000000 km.
How many kilometers are in 1 astronomical unit?
1 astronomical unit equals 149600000 kilometers.
What is the formula for astronomical units to kilometers?
The formula is: km = AU × 149600000.