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Astronomical units to kilometers

Convert astronomical units to kilometers, with the math shown step by step.

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Kilometers
463,753,399.17 km

3.1 au = 463,753,399.17 km

Also equals

How it works

km = au × 149,597,870.7

One astronomical unit is exactly 149,597,870.7 kilometers, so multiplying by 149,597,870.7 turns astronomical units into kilometers. For example, 1 au is about 149,600,000 km.

  1. Multiply by 149,597,870.7 3.1 × 149,597,870.7 = 463,753,399.17 km

Nearby values

Astronomical units Kilometers Miles Light-years
2.8 au 418,874,037.96 km 260,276,260.36 0.0000443
2.9 au 433,833,825.03 km 269,571,841.09 0.0000459
3 au 448,793,612.1 km 278,867,421.82 0.0000474
3.1 au 463,753,399.17 km 288,163,002.55 0.000049
3.2 au 478,713,186.24 km 297,458,583.27 0.0000506
3.3 au 493,672,973.31 km 306,754,164 0.0000522
3.4 au 508,632,760.38 km 316,049,744.73 0.0000538

Printed from rocketcalc.io/astronomy/au-to-km/3.1