Convert Millimeter to Astronomical Unit
Enter the number of millimeters that you want to convert to astronomical units.
How to Convert Millimeters to Astronomical Units
The millimeter and astronomical unit are both units of length. By definition, 1 astronomical unit equals exactly 1.496e14 millimeters. This means to convert millimeters to astronomical units, you divide by 1.496e14.
Formula
Step-by-Step Example
Convert 5 mm to astronomical units:
We need to convert millimeters to astronomical units
Since 1 AU = 1.496e14 mm, divide by 1.496e14
5 ÷ 1.496e14 = 3.3422459893e-14
5 mm = 3.3422459893e-14 AU
Millimeter to Astronomical Unit Conversion Table
Quick reference table for common millimeter to astronomical unit conversions. Click any value for detailed calculation.
| Millimeters (mm) | Astronomical Units (AU) |
|---|---|
| 0.1 mm | 6.6844919786e-16 AU |
| 0.5 mm | 3.3422459893e-15 AU |
| 1 mm | 6.6844919786e-15 AU |
| 2 mm | 1.3368983957e-14 AU |
| 5 mm | 3.3422459893e-14 AU |
| 10 mm | 6.6844919786e-14 AU |
| 25 mm | 1.6711229947e-13 AU |
| 50 mm | 3.3422459893e-13 AU |
| 100 mm | 6.6844919786e-13 AU |
About These Units
Millimeter (mm)
A millimeter (mm) is a metric unit of length equal to 1/1000 of a meter or 0.03937 inches. Millimeters are essential for precision measurements in engineering, manufacturing, medical imaging, and rainfall measurements. There are 25.4 mm in one inch.
Astronomical Unit (AU)
An astronomical unit (AU) is the average distance from Earth to the Sun: approximately 149.6 million kilometers or 93 million miles. AUs measure distances within our solar system. Mars is 1.52 AU from the Sun, Jupiter is 5.2 AU.
Frequently Asked Questions
How do I convert millimeters to astronomical units?
To convert millimeters to astronomical units, divide the value by 1.496e14. For example, 10 mm = 6.6844919786e-14 AU.
How many astronomical units are in 1 millimeter?
1 millimeter equals 6.6844919786e-15 astronomical units.
What is the formula for millimeters to astronomical units?
The formula is: AU = mm ÷ 1.496e14.