AU to KM Converter

Convert astronomical units to kilometers with accurate formulas, examples and conversion tables.

Length conversion

Calculator

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Result

149,597,870.7 km

1 AU ≈ 149,597,870.7 km

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Popular length conversions

Open a focused converter for a commonly searched length conversion.

Centimeters to Inches1 cm = 0.39370079 in Inches to Centimeters1 in = 2.54 cm Meters to Feet1 m = 3.2808399 ft Feet to Meters1 ft = 0.3048 m Kilometers to Miles1 km = 0.62137119 mi Miles to Kilometers1 mi = 1.609344 km Millimeters to Inches1 mm = 0.03937008 in Inches to Millimeters1 in = 25.4 mm Yards to Meters1 yd = 0.9144 m Meters to Yards1 m = 1.0936133 yd

Conversion table

Common astronomical units to kilometers values, generated from the selected units.

astronomical units (AU)	kilometers (km)
1 astronomical unit	149,597,870.7 kilometers
5 astronomical units	747,989,353.5 kilometers
10 astronomical units	1,495,978,707 kilometers
20 astronomical units	2,991,957,414 kilometers
50 astronomical units	7,479,893,535 kilometers
100 astronomical units	14,959,787,070 kilometers

Conversion Formula

Multiply the value in astronomical units by 149597870.7 to get kilometers.

Formulakm = AU × 149597870.7

Example

Convert 1 astronomical unit to kilometers:

1 × 149597870.7= 149,597,870.7 km

Unit information

Concise reference information for the selected source and target units.

Astronomical unit (AU)

Scientific

1 AU = 149,597,870,700 m

Definition: One astronomical unit equals exactly 149,597,870,700 meters.
Usage: Used for distances within the solar system.

Kilometer (km)

Metric

1 km = 1,000 m

Definition: One kilometer equals exactly 1,000 meters.
Usage: Used for road distances, geography, travel, and outdoor sports.

Frequently asked questions

How many kilometers are in 1 astronomical unit?

1 astronomical unit equals 149,597,870.7 kilometers.

How do you convert astronomical units to kilometers?

Multiply the value in astronomical units by 149597870.7 to get kilometers. The formula is km = AU × 149597870.7.

What is 10 astronomical units in kilometers?

10 astronomical units is approximately 1,495,978,707 kilometers.