# Astronomical Units to Leagues (au to lea)

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

**1 au = 30985269.091009 lea**

One astronomical unit equals approximately 3.098 x 107 leagues (English league of 4.828 km), or about 31 million leagues. Jules Verne's 'twenty thousand leagues' (80,000 km) is only 0.000535 AU. This conversion pairs the solar system distance unit with one of the most archaic and variable length units in history.

## Formula

Convert Astronomical Units to Leagues

## Conversion Table

| Astronomical Units (au) | Leagues (lea) |
|---|---|
| 1.0E-8 au | 0.30985269091009 lea |
| 1.0E-7 au | 3.0985269091009 lea |
| 1.0E-6 au | 30.985269091009 lea |
| 1.0E-5 au | 309.85269091009 lea |
| 0.0001 au | 3098.5269091009 lea |
| 0.001 au | 30985.269091009 lea |
| 0.01 au | 309852.69091009 lea |
| 0.1 au | 3098526.9091009 lea |
| 0.39 au | 12084254.945493 lea |
| 0.72 au | 22309393.745526 lea |
| 1 au | 30985269.091009 lea |
| 1.52 au | 47097609.018333 lea |
| 5.2 au | 161123399.27324 lea |

## Units

### 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.

### League (lea)

Exactly 3 statute miles (4828.032 m). A historical unit of distance, often associated with the distance a person could walk in one hour.

## Background

The Earth-Sun distance of 1 AU is about 31 million English leagues. The entire journey in Twenty Thousand Leagues Under the Sea would cover barely half a thousandth of an AU. Since the league has no single agreed-upon definition, this conversion uses the English league of 3 statute miles (4.828 km).

## Good to Know

The league is famous from literature but scientifically meaningless. The AU is scientifically precise but rarely appears in literature. Their pairing is a collision of storytelling and science.

## FAQ

### How many leagues are in 1 AU?

One AU contains approximately 3.098 x 107 leagues (about 31 million English leagues of 4.828 km each).

### How far is 20,000 leagues in AU?

Twenty thousand leagues (about 80,000 km using the French metric league of 4 km) is approximately 0.000535 AU. Verne's submarine traveled less than one-thousandth of the Earth-Sun distance.

### Which league definition is used here?

The English league of 3 statute miles (4.828 km). The league has no universal definition. The French league was about 4 km, the Spanish legua about 4.2 km, and the Portuguese legua about 6.2 km.

## Non-Frequently Asked Questions

### Is the Sun 20,000 leagues away?

No. The Sun is about 30,970 leagues away (1 AU). Verne's 20,000 leagues was horizontal submarine travel, not distance to the Sun. But at 30,970 leagues, the Sun is about 1.5x Verne's entire voyage.

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## See Also

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