km to astronomical units Converter
Convert km to astronomical units instantly: 1 km = 6.6846e-09 astronomical units. Free converter with the formula, a reference table and FAQs — no sign-up.
| km | astronomical units |
|---|
How to convert km to astronomical units
Enter your value
Type the number of km you want to convert into the left box. The result in astronomical units appears instantly in the right box. You can also type into the right box to convert in the other direction.
Use the swap button
Click the ⇄ Swap button to reverse the conversion — astronomical units to km. Your current value carries across so you don't have to re-enter anything.
About km and astronomical units
km and astronomical units are common length measurements.
Worked examples: km to astronomical units
Multiply the km value by 6.6846e-09 to get astronomical units. A few quick examples:
- 5 km × 6.6846e-09 = 3.3423e-08 astronomical units
- 25 km × 6.6846e-09 = 1.67115e-07 astronomical units
- 250 km × 6.6846e-09 = 1.67115e-06 astronomical units
Related conversions
| km | astronomical units |
|---|---|
| 1 | 6.685e-09 |
| 1000 | 6.685e-06 |
| 149597871 | 1 |
| 1000000000.0 | 6.685 |
| 1000000000000.0 | 6685 |
| 1000000000000000.0 | 6.685e+06 |
Frequently asked questions
How do I convert km to astronomical units?
To convert km to astronomical units, multiply by 6.6846e-09. Or use the calculator above for instant results.
How many astronomical units are in 1 km?
1 km equals 6.6846e-09 astronomical units.
Is the km to astronomical units converter free?
Yes, the km to astronomical units converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.