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Astronomical Unit Converter

Convert astronomical units to km, miles, light minutes and light years — the scale of the solar system.

Enter values

Results update as you type.

Result

Astronomical units

1

Kilometres
149,597,870.7
Miles
92,955,807.27
Light minutes
8.3167
Light years
0.000015813

About the Astronomical Unit Converter

Convert astronomical units to km, miles, light minutes and light years — the scale of the solar system.

Also known as: au to km, astronomical unit to miles, earth sun distance, au conversion.

How to use this calculator

  1. Enter value, unit.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

1 AU = 149,597,870.7 km = the average Earth–Sun distance

Worked example

Using the values pre-filled in the calculator above:

  • Value = 1
  • Unit: Astronomical units

the calculator returns:

  • Astronomical units: 1
  • Kilometres: 149,597,870.7
  • Miles: 92,955,807.27
  • Light minutes: 8.3167