Astronomical Units To Millimeters Converter

Convert between Astronomical Units (au) and Millimeters (mm). Switch the direction selector to reverse the conversion.

Astronomical Units

Conversion direction

Millimeters

149597870700000 mm

Conversion Table

au	mm

Reverse Conversion

Millimeters to Astronomical Units

How This Converter Works

Convert astronomical Units to millimeters. Select the reverse direction to convert back.

Formula or rule

mm = au * 149597870700000; au = mm / 149597870700000

Example

Input: 1 au
Calculation: 1 * 149597870700000 = 149597870700000
Result: 149597870700000 mm

Notes

Land units use the international foot (0.3048 m), not the retired U.S. survey foot; a nautical mile is 1,852 m; the astronomical unit is exactly 149,597,870,700 m; a light-year uses the Julian year; a parsec is 648,000/pi astronomical units.