Direct conversion
Convert astronomical unit [AU] to light day [light-d] instantly with formula, examples, chart, and FAQs.
1 astronomical unit [AU] = 0.005776 light day [light-d]
1 astronomical unit [AU] = 0.005776 light day [light-d]
Example: 1 astronomical unit [AU] equals 0.005776 light day [light-d].
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 light day (light-d) 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 light day when comparing length values, checking specifications, converting between systems, or preparing quick estimates.
| astronomical unit [AU] | light day [light-d] |
|---|---|
| 1 | 0.005776 |
| 2 | 0.011551 |
| 5 | 0.028878 |
| 10 | 0.057755 |
| 20 | 0.11551 |
| 25 | 0.144388 |
| 50 | 0.288776 |
| 100 | 0.577552 |
| 1000 | 5.775518 |
Use this formula: 1 astronomical unit [AU] = 0.005776 light day [light-d] Enter your value in the calculator and the result updates instantly.
1 astronomical unit [AU] equals 0.005776 light day [light-d].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.