Convert Centimeters to Astronomical Units
Convert Centimeters (cm) to Astronomical Units (AU) instantly and accurately.
Conversion Formula
AU = cm × 6.684587122e-14
About Centimeters
A centimeter (cm) is one hundredth of a meter and one of the most frequently used units in daily life. A typical fingernail is about 1 cm wide, and a standard paperclip is about 3 cm long. This unit is particularly common in the metric system for measuring body height, clothing sizes, and small objects. In many countries, rulers in schools are marked in centimeters, making it a familiar unit for educational purposes. There are 2.54 centimeters in one inch.
About Astronomical Units
An astronomical unit (AU) is the average distance between Earth and the Sun, precisely defined as 149,597,870.7 kilometers. This unit provides a convenient scale for measuring distances within our solar system. Mars orbits at 1.5 AU, Jupiter at 5.2 AU, and Neptune at about 30 AU from the Sun. The dwarf planet Pluto reaches up to 49 AU away. Light takes about 8.3 minutes to travel 1 AU, explaining why we see the Sun as it was 8 minutes ago. The AU is fundamental in astronomy and space exploration.
Quick Reference Table
| Centimeters (cm) | Astronomical Units (AU) |
|---|---|
| 1 cm | 6.685 × 10-14 AU |
| 2 cm | 1.337 × 10-13 AU |
| 5 cm | 3.342 × 10-13 AU |
| 10 cm | 6.685 × 10-13 AU |
| 25 cm | 1.671 × 10-12 AU |
| 50 cm | 3.342 × 10-12 AU |
| 100 cm | 6.685 × 10-12 AU |