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Convert astronomical unit to kilometer

Convert astronomical unit to kilometer with a verified formula, worked example, conversion table, precision guidance, and reverse conversion.

astronomical unit to kilometer

kilometer—

Quick answer

1 astronomical unit = 149597870.691 kilometer.

Formula

kilometer = astronomical unit × 149597870.6910000000000000000

Precision

The stored factor is used at full decimal precision; round only the displayed result to the precision required by the task.

How to convert astronomical unit to kilometer

Enter a value in astronomical unit.
CalculatorHQ converts this pair with the expression y = x × 149597870.6910000000000000000.
Round the displayed kilometer value only when needed.

About these units

astronomical unit is a unit used in length conversions. Length measures distance or linear extent. Its recorded symbol is AU, UA. kilometer is a unit used in length conversions. Length measures distance or linear extent. Its recorded symbol is km.

Explore related conversions

astronomical unit to kilometer conversion table

astronomical unit	kilometer
0 astronomical unit	0e-19 kilometer
1 astronomical unit	149597870.691 kilometer
5 astronomical unit	747989353.455 kilometer
10 astronomical unit	1495978706.91 kilometer
25 astronomical unit	3739946767.28 kilometer
100 astronomical unit	14959787069.1 kilometer

Frequently asked questions

How do I convert from astronomical unit to kilometer?

CalculatorHQ converts this pair with the expression y = x × 149597870.6910000000000000000.

What formula does CalculatorHQ use for astronomical unit to kilometer?

kilometer = astronomical unit × 149597870.6910000000000000000

How should I round the result?

The stored factor is used at full decimal precision; round only the displayed result to the precision required by the task.

Can I convert kilometer back to astronomical unit?

Yes. Use the linked reverse conversion, whose formula is validated against this pair with round-trip tests.