Astronomical Units → Kilometers Converter

To convert astronomical units to kilometers, the value is multiplied by the exact conversion factor 149597870 — that is, 1 astronomical units = 149597870 kilometers. This tool applies that reference factor so results are precise.

1. 1

   Step 1

   Type the number you want to convert.

2. 2

   Step 2

   After entering the values, click "Calculate" to view the output.

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   Step 3

   Use the result while keeping the context and units in mind.

4. 4

   Step 4

   The breakdown under the result lists value × 149597870 — read it before copying the kilometers figure into your work.

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   Step 5

   Adjust the input and compare scenarios: a round anchor like 10 astronomical units gives 1495978700 kilometers — an easy mental check of the factor.

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  This page converts Astronomical Units to Kilometers using the exact reference factor 149597870. That is the standard figure, so the results here match reference tables rather than rounded approximations.

• 2

  Converting Astronomical Units to Kilometers multiplies by 149597870; the reverse direction divides by the same figure, so confirm the direction label before copying the result — near-one factors hide a swapped direction from a casual glance.

• 3

  Sanity-check the Astronomical Units to Kilometers result by converting it back in the opposite direction; landing on your original input confirms both the direction and the 149597870 factor were right before you rely on the number.

• Round-trip check: convert your astronomical units figure to kilometers, then convert back with the reverse tool — landing on the original number confirms both direction and factor. Skipping this check is how a flipped ratio survives into reports and homework.

• The exact factor for Astronomical Units → Kilometers carries 9 significant digits (149597870); rounding it early to 150000000 drifts a 1,000 astronomical units input by about 402129300 kilometers. Round only the final displayed answer.