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Astronomical Unit to Millimeter Converter

Convert astronomical units (au) to millimeters (mm). 1 au = 149,597,870,700,000 mm.

1 au = 149,597,870,700,000 mm

Millimeter to Astronomical Unit converter

How to convert astronomical units to millimeters

1 astronomical unit is equal to 149,597,870,700,000 millimeters, and 1 millimeter is equal to 6.684587122 × 10⁻¹⁵ astronomical units. To convert, multiply by the conversion factor:

millimeters = astronomical units × 149,597,870,700,000
millimeters = astronomical units ÷ 6.684587122 × 10⁻¹⁵

Example: convert 1 au to mm: 1 × 149,597,870,700,000 = 149,597,870,700,000 mm.

Astronomical Unit to Millimeter conversion table

Astronomical Unit (au)Millimeter (mm)
0.01 au1,495,978,707,000 mm
0.1 au14,959,787,070,000 mm
1 au149,597,870,700,000 mm
2 au299,195,741,400,000 mm
3 au448,793,612,100,000 mm
5 au747,989,353,500,000 mm
10 au1.495978707 × 10¹⁵ mm
20 au2.991957414 × 10¹⁵ mm
50 au7.479893535 × 10¹⁵ mm
100 au1.495978707 × 10¹⁶ mm
250 au3.739946768 × 10¹⁶ mm
500 au7.479893535 × 10¹⁶ mm
1,000 au1.495978707 × 10¹⁷ mm

About the astronomical unit

The astronomical unit is exactly 149,597,870,700 m, roughly the average distance from Earth to the Sun. It's used for distances within the solar system.

Symbol: au · 1 au = 149,597,870,700 m · Category: Astronomical

About the millimeter

A millimeter is one thousandth of a meter. It's the standard unit in engineering drawings, manufacturing, rainfall and screen and paper sizes.

Symbol: mm · 1 mm = 0.001 m · Category: Metric (SI)

Frequently asked questions

How many millimeters are in a astronomical unit?

There are 149,597,870,700,000 millimeters in 1 astronomical unit (au).

How many astronomical units are in a millimeter?

1 millimeter (mm) equals 6.684587122 × 10⁻¹⁵ astronomical units.

How do I convert astronomical units to millimeters?

Multiply the length in astronomical units by 149,597,870,700,000. For example, 1 au × 149,597,870,700,000 = 149,597,870,700,000 mm.

How do I convert millimeters to astronomical units?

Divide the length in millimeters by 149,597,870,700,000, or multiply it by 6.684587122 × 10⁻¹⁵. You can also use the Millimeter to Astronomical Unit converter.