Convert inch to astronomical unit
Please provide values below to convert inch [in] to astronomical unit [AU, UA], or Convert astronomical unit to inch.
How to Convert Inch to Astronomical Unit
1 in = 1.69788512905619e-13 AU, UA
Example: convert 15 in to AU, UA:
15 in = 15 × 1.69788512905619e-13 AU, UA = 2.54682769358428e-12 AU, UA
Inch to Astronomical Unit Conversion Table
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Inch
An inch is a unit of length in the imperial and US customary systems of measurement. An inch was defined to be equivalent to exactly 25.4 millimeters in 1959. There are 12 inches in a foot and 36 inches in a yard.
History/Origin
The term "inch" was derived from the Latin unit "uncia" which was equivalent to "one-twelfth" of a Roman foot. The inch has had various standards throughout history, with the current definition being based on the international yard.
Current Use
The inch is mostly used in the United States, Canada, and the United Kingdom. It is also sometimes used in Japan (as well as other countries) in relation to electronic parts, like the size of display screens.
Astronomical Unit
The astronomical unit is a unit of length, now defined as exactly 149,597,870,700 meters. It is approximately the average distance between the Earth and the Sun.
History/Origin
Historically, the astronomical unit was the mean Earth-Sun distance. In 2012, the International Astronomical Union (IAU) redefined it as a fixed constant.
Current Use
The astronomical unit is used primarily for measuring distances within the Solar System or around other stars.