How many inches in 1 astronomical unit?
The answer is 5889679948464.6.

We assume you are converting between **inch** and **astronomical unit**.

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The SI base unit for **length** is the metre.

1 metre is equal to 39.370078740157 inches, or 6.6845871226706E-12 astronomical unit.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between inches and astronomical units.

Type in your own numbers in the form to convert the units!

You can do the reverse unit conversion from astronomical unit to inches, or enter any two units below:

inches to chinese foot

inches to kiloyard

inches to gigalight-year

inches to parasang

inches to decameter

inches to micrometer

inches to ligne

inches to span

inches to megameter

inches to royal foot

An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot. The inch is usually the universal unit of measurement in the United States, and is widely used in the United Kingdom, and Canada, despite the introduction of metric to the latter two in the 1960s and 1970s, respectively. The inch is still commonly used informally, although somewhat less, in other Commonwealth nations such as Australia; an example being the long standing tradition of measuring the height of newborn children in inches rather than centimetres. The international inch is defined to be equal to 25.4 millimeters.

The astronomical unit (AU or au or a.u. or sometimes ua) is a unit of length. It is approximately equal to the mean distance between the Earth and Sun. The currently accepted value of the AU is 149 597 870 691 ± 30 metres (about 150 million kilometres or 93 million miles).

The symbol "ua" is recommended by the Bureau International des Poids et Mesures, but in the United States and other anglophone countries the reverse usage is more common. The International Astronomical Union recommends "au" and international standard ISO 31-1 uses "AU".

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