# Inches to Astronomical Units (in to au)

Source: https://www.unitconvertercalculator.com/length/inches-to-astronomical-units/

**1 in = 1.6978851290562E-13 au**

One inch equals approximately 1.698 x 10-13 astronomical units. The Earth-Sun distance (1 AU) is about 5.89 x 1012 inches (5.89 trillion inches). The inch measures everyday objects; the AU measures planetary orbits.

## Formula

Convert Inches to Astronomical Units

## Conversion Table

| Inches (in) | Astronomical Units (au) |
|---|---|
| 10000000000000 in | 1.6978851290562 au |
| 20000000000000 in | 3.3957702581124 au |
| 50000000000000 in | 8.4894256452809 au |
| 100000000000000 in | 16.978851290562 au |
| 250000000000000 in | 42.447128226405 au |
| 500000000000000 in | 84.894256452809 au |
| 1000000000000000 in | 169.78851290562 au |
| 5000000000000000 in | 848.94256452809 au |
| 10000000000000000 in | 1697.8851290562 au |

## Units

### Inch (in)

An imperial unit of length equal to exactly 2.54 centimeters. Commonly used in the US and UK for screen sizes, body measurements, and construction.

### Astronomical Unit (au)

Exactly 149,597,870,700 meters by IAU 2012 definition. Roughly the average distance from the Earth to the Sun. Used for distances within our solar system.

## Background

The Earth-Sun distance is about 5.89 trillion inches. A 55-inch TV screen is 9.35 x 10-12 AU. Mount Everest at about 346,000 inches is 5.88 x 10-8 AU. Even the tallest mountain is an infinitesimal fraction of an AU.

## Good to Know

Screen sizes worldwide use inches - even in metric countries. But nobody has ever expressed the Earth-Sun distance in inches. The inch rules the living room. The AU rules the solar system. Neither crosses into the other's territory.

## FAQ

### How many AU is 1 inch?

One inch equals approximately 1.698 x 10-13 AU.

### How many inches are in 1 AU?

One AU contains approximately 5.89 x 1012 inches (about 5.89 trillion).

### Is this conversion practical?

No. Inches and AU serve completely different measurement scales separated by about 13 orders of magnitude.

## Non-Frequently Asked Questions

### How many TV screens to the Sun?

A 55-inch TV is about 0.00000093 AU. You would need about 1.07 million 55-inch TVs end-to-end to reach the Sun. The ultimate home theater setup.

## Related Articles

- [Why We Measure: The Deepest Urge in Human Civilisation](https://www.unitconvertercalculator.com/blog/why-we-measure)
- [The Map Is Not the Territory: Why Every Measurement Is Wrong](https://www.unitconvertercalculator.com/blog/the-map-is-not-the-territory)
- [Zero: The Most Dangerous Number in Measurement](https://www.unitconvertercalculator.com/blog/zero-the-most-dangerous-number-in-measurement)
- [The Body as a Ruler: Every Measurement Unit That Came From Us](https://www.unitconvertercalculator.com/blog/the-body-as-a-ruler)
- [The Speed of Everything: How We Measure From Glaciers to Light](https://www.unitconvertercalculator.com/blog/the-speed-of-everything)
- [15 Obscure Measurement Units You've Never Heard Of (But Still Need)](https://www.unitconvertercalculator.com/blog/obscure-measurement-units-guide)
- [When Measurements Go Wrong - Disasters, Blunders and Happy Accidents](https://www.unitconvertercalculator.com/blog/when-measurements-go-wrong)
- [The Surprising Stories Behind Everyday Units of Measurement](https://www.unitconvertercalculator.com/blog/stories-behind-measurement-units)
- [Metric vs. Imperial - The Complete Guide to the World's Two Measurement Systems](https://www.unitconvertercalculator.com/blog/metric-vs-imperial-complete-guide)
- [Length & Distance Conversion Guide - Meters, Feet, Miles & Kilometers](https://www.unitconvertercalculator.com/blog/length-and-distance-guide)

## See Also

- [Astronomical Units to Inches](https://www.unitconvertercalculator.com/length/astronomical-units-to-inches/)