---
title: "Astronomical units to Inches — AU to in converter"
description: "1 astronomical unit = 5,889,679,900,000 inches. Convert astronomical units to inches with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/astronomical-units-to-inches/
site: "At One Place"
---

# Astronomical units to inches

**1 astronomical unit in inches: 1 AU = 5,889,679,900,000 in**

in = AU × 5,889,679,949,000

To convert astronomical units to inches, multiply by 5,889,679,949,000. The table below gives the values people look up most often, and the converter works for any number.

## Astronomical units to inches table

*Common astronomical unit values converted to inches.*

| Astronomical units | Inches |
| --- | --- |
| 1 AU | 5,889,679,900,000 |
| 2 AU | 11,779,360,000,000 |
| 3 AU | 17,669,040,000,000 |
| 4 AU | 23,558,720,000,000 |
| 5 AU | 29,448,400,000,000 |
| 10 AU | 58,896,799,000,000 |
| 15 AU | 88,345,199,000,000 |
| 20 AU | 117,793,600,000,000 |
| 25 AU | 147,242,000,000,000 |
| 30 AU | 176,690,400,000,000 |
| 40 AU | 235,587,200,000,000 |
| 50 AU | 294,484,000,000,000 |
| 75 AU | 441,726,000,000,000 |
| 100 AU | 588,967,990,000,000 |
| 250 AU | 1.47242 × 10^15 |
| 500 AU | 2.94484 × 10^15 |
| 1,000 AU | 5.8896799 × 10^15 |

## How the conversion works

The relationship is in = AU × 5,889,679,949,000. Both units measure length, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

## Common questions

### How many inches are in one astronomical unit?

One astronomical unit equals 5,889,679,900,000 inches. in = AU × 5,889,679,949,000.

### How do you convert astronomical units to inches?

Use in = AU × 5,889,679,949,000. So 10 AU is 58,896,799,000,000 in.

### How many astronomical units are in one inch?

One inch equals 1.698 × 10^-13 astronomical units, which is the reverse of the conversion above.

## Related pages

- [Inches to Astronomical units](https://atoneplace.net/convert/inches-to-astronomical-units/)
- [Astronomical units to Meters](https://atoneplace.net/convert/astronomical-units-to-meters/)
- [Astronomical units to Kilometers](https://atoneplace.net/convert/astronomical-units-to-km/)
- [Astronomical units to Centimeters](https://atoneplace.net/convert/astronomical-units-to-cm/)
- [Astronomical units to Millimeters](https://atoneplace.net/convert/astronomical-units-to-mm/)
- [Astronomical units to Miles](https://atoneplace.net/convert/astronomical-units-to-miles/)
- [Astronomical units to Yards](https://atoneplace.net/convert/astronomical-units-to-yards/)
- [Astronomical units to Feet](https://atoneplace.net/convert/astronomical-units-to-feet/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)