---
title: "Astronomical units to Feet — AU to ft converter"
description: "1 astronomical unit = 490,806,660,000 feet. Convert astronomical units to feet with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/astronomical-units-to-feet/
site: "At One Place"
---

# Astronomical units to feet

**1 astronomical unit in feet: 1 AU = 490,806,660,000 ft**

ft = AU × 490,806,662,400

To convert astronomical units to feet, multiply by 490,806,662,400. The table below gives the values people look up most often, and the converter works for any number.

## Astronomical units to feet table

*Common astronomical unit values converted to feet.*

| Astronomical units | Feet |
| --- | --- |
| 1 AU | 490,806,660,000 |
| 2 AU | 981,613,320,000 |
| 3 AU | 1,472,420,000,000 |
| 4 AU | 1,963,226,600,000 |
| 5 AU | 2,454,033,300,000 |
| 10 AU | 4,908,066,600,000 |
| 15 AU | 7,362,099,900,000 |
| 20 AU | 9,816,133,200,000 |
| 25 AU | 12,270,167,000,000 |
| 30 AU | 14,724,200,000,000 |
| 40 AU | 19,632,266,000,000 |
| 50 AU | 24,540,333,000,000 |
| 75 AU | 36,810,500,000,000 |
| 100 AU | 49,080,666,000,000 |
| 250 AU | 122,701,670,000,000 |
| 500 AU | 245,403,330,000,000 |
| 1,000 AU | 490,806,660,000,000 |

## How the conversion works

The relationship is ft = AU × 490,806,662,400. 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.

> Foot: Plural is "feet".

## Common questions

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

One astronomical unit equals 490,806,660,000 feet. ft = AU × 490,806,662,400.

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

Use ft = AU × 490,806,662,400. So 10 AU is 4,908,066,600,000 ft.

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

One foot equals 2.037 × 10^-12 astronomical units, which is the reverse of the conversion above.

### Is there more than one kind of foot?

Plural is "feet".

## Related pages

- [Feet to Astronomical units](https://atoneplace.net/convert/feet-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 Inches](https://atoneplace.net/convert/astronomical-units-to-inches/)

## 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/)