Convert Inches to Astronomical Units
Convert Inches (in) to Astronomical Units (AU) instantly and accurately.
Conversion Formula
AU = in × 1.697885129e-13
About Inches
The inch (in) is a unit of length primarily used in the United States, Canada, and the United Kingdom. Historically, an inch was defined as the width of a man's thumb, but today it's precisely defined as 2.54 centimeters. Common examples include: a quarter coin is about 1 inch in diameter, a standard smartphone is roughly 6 inches tall, and most computer screens are measured diagonally in inches. The inch is divided into fractions like 1/2, 1/4, 1/8, and 1/16 for precision measurements.
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
| Inches (in) | Astronomical Units (AU) |
|---|---|
| 1 in | 1.698 × 10-13 AU |
| 2 in | 3.396 × 10-13 AU |
| 5 in | 8.489 × 10-13 AU |
| 10 in | 1.698 × 10-12 AU |
| 25 in | 4.245 × 10-12 AU |
| 50 in | 8.489 × 10-12 AU |
| 100 in | 1.698 × 10-11 AU |