Astronomical Unit to Inch Converter
Convert Astronomical Unit (AU) to Inch (in) instantly. 1 AU = 5.889680e+12 in.
Length Converter
31 units available
1 AU = 5.889680e+12 in
Formula:
in = AU × 5.889680e+12With your value: 1 AU = 5.889680e+12 in
How big is that?
Everyday references on a logarithmic scale, all expressed in astronomical unit so you can sanity-check the result.
Other Astronomical Unit to Inch conversions
Astronomical Unit to Inch Conversion Table
| Astronomical Unit (AU) | Inch (in) |
|---|---|
| 0.5 | 2.944840e+12 |
| 1 | 5.889680e+12 |
| 2 | 1.177936e+13 |
| 5 | 2.944840e+13 |
| 10 | 5.889680e+13 |
| 15 | 8.834520e+13 |
| 20 | 1.177936e+14 |
| 25 | 1.472420e+14 |
| 50 | 2.944840e+14 |
| 100 | 5.889680e+14 |
| 250 | 1.472420e+15 |
| 500 | 2.944840e+15 |
| 1000 | 5.889680e+15 |
Inch to Astronomical Unit Conversion Table
| Inch (in) | Astronomical Unit (AU) |
|---|---|
| 0.5 | 8.489426e-14 |
| 1 | 1.697885e-13 |
| 2 | 3.395770e-13 |
| 5 | 8.489426e-13 |
| 10 | 1.697885e-12 |
| 15 | 2.546828e-12 |
| 20 | 3.395770e-12 |
| 25 | 4.244713e-12 |
| 50 | 8.489426e-12 |
| 100 | 1.697885e-11 |
| 250 | 4.244713e-11 |
| 500 | 8.489426e-11 |
| 1000 | 1.697885e-10 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Astronomical Unit (AU)
Length
The astronomical unit is exactly 149 597 870 700 m (IAU Resolution B2, 2012).
Source: IAU Resolution B2 (2012) — definition of the astronomical unit; IAU B2 (2015) nominal values
International Astronomical Union · Reviewed 2026-07-01
Inch (in)
Length
1 inch = 25.4 mm exactly, fixed by the 1959 international yard and pound agreement.
Source: International Yard and Pound Agreement of 1959; NIST Federal Register Notice 59-5442
US, UK, Canada, Australia, New Zealand, South Africa · Reviewed 2026-07-01
How to Convert Astronomical Unit to Inch
To convert from Astronomical Unit (AU) to Inch (in), multiply the value by 5.889680e+12.
Formula: in = AU × 5.889680e+12
Reverse: AU = in × 1.697885e-13
Step-by-Step Example
- Start with your value in Astronomical Unit. For example: 5 AU
- Multiply by the conversion factor: 5 x 5.889680e+12
- The result is: 2.944840e+13 in
About Astronomical Unit
The astronomical unit (AU) is defined as exactly 149,597,870,700 metres, close to the mean Earth–Sun distance. It is the natural yardstick for the Solar System.
Common uses: planetary science, orbital mechanics, astronomy.
About Inch
The inch is an imperial unit equal to 1/12 of a foot or 2.54 centimeters. It is widely used in the US and UK for small measurements.
Fun Fact: The inch was historically defined as the width of a man's thumb.
Common uses: screen sizes, construction, clothing.
Frequently Asked Questions
How many Inch are in 1 Astronomical Unit?
There are exactly 5.889680e+12 Inch in 1 Astronomical Unit. This means the conversion factor from Astronomical Unit to Inch is 5.889680e+12.
What is the formula to convert Astronomical Unit to Inch?
The formula to convert Astronomical Unit to Inch is: in = AU × 5.889680e+12. For example, to convert 10 Astronomical Unit to Inch, you would multiply 10 by 5.889680e+12.
What is a Astronomical Unit?
The astronomical unit (AU) is defined as exactly 149,597,870,700 metres, close to the mean Earth–Sun distance. It is the natural yardstick for the Solar System.
What is a Inch?
The inch is an imperial unit equal to 1/12 of a foot or 2.54 centimeters. It is widely used in the US and UK for small measurements.
What are the common uses of Astronomical Unit?
The Astronomical Unit is commonly used in planetary science, orbital mechanics, astronomy.
Related Length Conversions
Cite this page
UnitConvertLab. (2026). Astronomical Unit to Inch converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/astronomical_unit-to-inch