Astronomical Unit Converter
Result
Kilometres149597870.6999999881
Light-minutes8.3167463973
Light-hours0.13861244
↗ Space
Convert astronomical units into kilometres and light-travel time.
Formula
Distance (km) = AU × 149,597,870.7
- One astronomical unit (AU) is taken as exactly 149,597,870.7 km.
- The main inputs are Distance. Enter them in the units and format shown in the calculator.
- Use the units, labels and assumptions shown beside each input so the formula is applied consistently.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Astronomical Unit
Inputs
- Distance: 1 AU
1 AU equals 149,597,870.7 km and light takes about 8.32 minutes to cross it.
Sample result: Calculating…
Frequently asked questions
What does this calculator estimate?
It converts AU into kilometres and corresponding light-travel time.
Is this an exact mission-planning tool?
No. It is an educational calculator based on the stated constants and simplified assumptions.
How accurate is the result?
The astronomical unit is an exact SI-defined length, so conversion accuracy is limited mainly by rounding.
What does the Astronomical Unit calculate?
Convert astronomical units into kilometres and light-travel time.
Which values should I enter?
Enter Distance using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: Distance (km) = AU × 149,597,870.7.