# Light-years to Miles (ly to mi)

Source: https://www.unitconvertercalculator.com/length/light-years-to-miles/

**1 ly = 5878625373183.6 mi**

One light-year equals approximately 5.879 x 1012 miles (about 5.88 trillion). This is the most commonly cited light-year conversion in American popular science, making interstellar distances graspable in the American road-distance unit.

## Formula

Convert Light-years to Miles

## Conversion Table

| Light-years (ly) | Miles (mi) |
|---|---|
| 0.001 ly | 5878625373.1836 mi |
| 0.01 ly | 58786253731.836 mi |
| 0.1 ly | 587862537318.36 mi |
| 0.5 ly | 2939312686591.8 mi |
| 1 ly | 5878625373183.6 mi |
| 2 ly | 11757250746367 mi |
| 4.24 ly | 24925371582298 mi |
| 5 ly | 29393126865918 mi |
| 8.6 ly | 50556178209379 mi |
| 10 ly | 58786253731836 mi |
| 50 ly | 2.9393126865918E+14 mi |
| 100 ly | 5.8786253731836E+14 mi |
| 1000 ly | 5.8786253731836E+15 mi |
| 100000 ly | 5.8786253731836E+17 mi |

## Units

### Light-year (ly)

The distance light travels in one Julian year (365.25 days) in vacuum. Exactly 9,460,730,472,580,800 meters. Used for interstellar distances.

### Mile (mi)

An imperial unit of length equal to 5,280 feet or approximately 1.609 kilometers. The standard unit for road distances in the US and UK.

## Background

Proxima Centauri at 4.24 light-years is about 24.9 trillion miles away. Light travels about 186,282 miles per second. The Sun is 93 million miles (1 AU) away. A light-year is about 63,241 times the Earth-Sun distance.

## Good to Know

Americans hear '5.88 trillion miles' and feel the vastness. The rest of the world hears '9.46 trillion kilometers.' Both numbers are equally incomprehensible. The light-year was invented precisely because neither miles nor kilometers can make interstellar distances feel real.

## FAQ

### How many miles are in 1 light-year?

One light-year equals approximately 5.879 x 1012 miles (about 5.88 trillion miles).

### How fast does light travel in miles per second?

Light travels approximately 186,282 miles per second (299,792 km/s).

### How far is the nearest star in miles?

Proxima Centauri is about 24.9 trillion miles (4.24 light-years) from Earth.

## Non-Frequently Asked Questions

### How many times around Earth equals 1 light-year in miles?

Earth's circumference is about 24,901 miles. 1 light-year is about 5.88 trillion miles. That is about 236 million laps around Earth. If you drove around the equator once per day, it would take 646,575 years to cover 1 light-year. The cosmos does not respect frequent flyer programs.

### How many frequent flyer miles is 1 light-year?

About 5.88 trillion. At 1 cent per mile redemption value, that is $58.8 billion in rewards. Unfortunately, no airline flies to Proxima Centauri. You would have the points but nowhere to spend them.

### If every mile driven by every car in America were added up, would it reach 1 light-year?

Americans drive about 3.2 trillion miles per year. One light-year is 5.88 trillion miles. So all American driving for about 1.8 years totals 1 light-year. Collectively, America drives to the stars every 22 months. Just not in the same direction.

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## See Also

- [Miles to Light-years](https://www.unitconvertercalculator.com/length/miles-to-light-years/)