Direct conversion
Convert astronomical unit [AU] to megameter [Mm] instantly with formula, examples, chart, and FAQs.
1 astronomical unit [AU] = 149597.8707 megameter [Mm]
1 astronomical unit [AU] = 149597.8707 megameter [Mm]
Example: 1 astronomical unit [AU] equals 149597.8707 megameter [Mm].
Length conversions use the metre as the reference unit. Common imperial relationships are exact where standardized, such as 1 inch = 0.0254 metre and 1 foot = 0.3048 metre.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-08-14.
The astronomical unit (AU) is a length unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse astronomical unit when comparing length values, checking specifications, converting between systems, or preparing quick estimates.
The megameter (Mm) is a length unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse megameter when comparing length values, checking specifications, converting between systems, or preparing quick estimates.
| astronomical unit [AU] | megameter [Mm] |
|---|---|
| 1 | 149597.8707 |
| 2 | 299195.7414 |
| 5 | 747989.3535 |
| 10 | 1495978.707 |
| 20 | 2991957.414 |
| 25 | 3739946.7675 |
| 50 | 7479893.535 |
| 100 | 14959787.07 |
| 1000 | 149597870.7 |
Use this formula: 1 astronomical unit [AU] = 149597.8707 megameter [Mm] Enter your value in the calculator and the result updates instantly.
1 astronomical unit [AU] equals 149597.8707 megameter [Mm].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.