Convert length and distance units — meters, feet, inches, kilometers, miles, light years and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 au | 92957.1 mi | |
| 0.01 au | 929571 mi | |
| 0.1 au | 9.29571e+06 mi | |
| 1 au | 9.29571e+07 mi | |
| 5 au | 4.64786e+08 mi | |
| 10 au | 9.29571e+08 mi | |
| 50 au | 4.64786e+09 mi | |
| 100 au | 9.29571e+09 mi | |
| 1000 au | 9.29571e+10 mi |
Multiply the number of Astronomical Units by 92957100 to get Miles. Formula: mi = au × 92957100. Example: 10 au × 92957100 = 929571000 mi. To reverse, divide Miles by 92957100 to get Astronomical Units.
| Astronomical Unit (au) | Mile (mi) |
|---|---|
| 0.001 au | 92957.1 mi |
| 0.01 au | 929571 mi |
| 0.1 au | 9295710 mi |
| 0.5 au | 46478600 mi |
| 1 au | 92957100 mi |
| 2 au | 185914000 mi |
| 5 au | 464786000 mi |
| 10 au | 929571000 mi |
| 20 au | 1859140000 mi |
| 50 au | 4647860000 mi |
| 100 au | 9295710000 mi |
| 250 au | 23239300000 mi |
| 500 au | 46478600000 mi |
| 1000 au | 92957100000 mi |
| 10000 au | 929571000000 mi |
To convert Astronomical Unit to Mile, multiply by 92957100. Example: 10 au = 929571000 mi
To convert Mile back to Astronomical Unit, divide by 92957100 (multiply by 1.0758×10-8). Use the swap button above.
Start with 100 Astronomical Units = 9295710000 mi as your reference point. Scale up or down from there.
American science communicators convert AU to miles for general audiences: "The Sun is 93 million miles away" (1 AU = 92.96 million miles) — the most widely cited astronomical distance in US media.
NASA press releases and public outreach materials regularly express spacecraft distances in both AU and miles to serve both scientific and general American audiences simultaneously.
US-based amateur astronomers use miles alongside AU when discussing planetary distances, comet approaches, and asteroid close-passes to make distances intuitive for audiences comfortable with miles.
Aerospace engineers in the US working across aviation (nautical miles, statute miles) and space (AU) domains convert between the systems when preparing cross-disciplinary documentation.
US educators building solar system scale models convert AU to miles: "If the Sun is in New York, where is Pluto?" — then express answers in miles of driving distance for practical intuition.
Early NASA mission documentation used statute miles for many measurements. Converting these records to AU and back is necessary when referencing historical Apollo-era and early planetary mission data.
The Astronomical Unit is a unit of Length measurement (symbol: au). 1 au = 92957100 mi. Used in scientific and practical Length measurement applications.
The Mile is a unit of Length measurement (symbol: mi). It is part of an internationally recognised measurement system used alongside the Astronomical Unit.
The astronomical unit has ancient roots — Aristarchus of Samos attempted to measure the Earth-Sun distance around 270 BC, estimating it at 18–20 lunar distances (the true value is about 390). For centuries the AU was estimated using Venus transit observations and trigonometry. Edmond Halley organised the first coordinated international transit-of-Venus expedition in 1716. The modern value was determined by radar ranging to Venus in 1961. The IAU formally defined the AU as exactly 149,597,870,700 metres in 2012 — a fixed constant of physics, not a measured distance.
The mile traces back to the Roman 'mille passuum' — a thousand paces — standardised at 5,000 Roman feet. When the Romans left Britain, the English statute mile evolved independently, fixed at 5,280 feet (8 furlongs) by Parliament in 1593 — deliberately chosen to align with the furlong system used in land measurement. The US adopted the statute mile from the British and never metricated road distances. Only three countries — the US, Liberia, and Myanmar — still officially use miles for road distances.
Common use: Astronomical Unit to Mile conversion is needed when working with international standards, scientific publications, or reference materials that use different unit systems for Length measurement.