Astronomical Unit to Exameter Converter
Unit Converter
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32 units available
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How to Convert Astronomical Unit to Exameter
To convert AU to km: multiply by 149,597,870.7. To convert AU to light-years: divide by 63,241.
1 AU = 149,597,870,700 m ≈ 149.598 Gm ≈ 499 light-seconds ≈ 8.317 light-minutes.
For example, 1 Astronomical Unit (AU) = 1.495979e-7 Exameter (Em).
Astronomical Unit to Exameter — Common Values
| Astronomical Unit (AU) | Exameter (Em) |
|---|---|
| 0.1 | 1.495979e-8 |
| 0.5 | 7.479894e-8 |
| 1 | 1.495979e-7 |
| 2 | 2.991957e-7 |
| 5 | 7.479894e-7 |
| 10 | 0.000001495978707 |
| 25 | 0.000003739946768 |
| 50 | 0.000007479893535 |
| 100 | 0.00001495978707 |
| 500 | 0.00007479893535 |
| 1000 | 0.0001495978707 |
About Astronomical Unit (AU)
Definition
The astronomical unit is a unit of length approximating the mean Earth-Sun distance, defined as exactly 149,597,870,700 meters.
Mathematical Relationship
1 AU = 149,597,870,700 m ≈ 149.598 Gm ≈ 499 light-seconds ≈ 8.317 light-minutes.
Conversion Formula
To convert AU to km: multiply by 149,597,870.7. To convert AU to light-years: divide by 63,241.
Practical Applications
Spacecraft mission planning, expressing planetary orbit sizes, and solar system scale models.
Interesting Facts
Light takes about 8 minutes and 20 seconds to travel 1 AU. Mars is about 1.52 AU from the Sun, Jupiter about 5.2 AU.
Common Mistakes
Thinking the AU is the exact Earth-Sun distance — Earth's actual distance varies from ~147 to ~152 Gm over the year due to orbital eccentricity.
Educational Tips
AU makes the solar system manageable: Mercury ≈ 0.39 AU, Venus ≈ 0.72, Earth = 1, Mars ≈ 1.52, Jupiter ≈ 5.2, Saturn ≈ 9.5.
About Exameter (Em)
Definition
The exameter is a unit of length equal to 10¹⁸ meters, or about 105.7 light-years.
Mathematical Relationship
1 Em = 10¹⁸ m = 1,000 Pm ≈ 105.7 light-years ≈ 32.4 parsecs.
Conversion Formula
To convert Em to light-years: multiply by 105.7. To convert Em to parsecs: multiply by 32.4.
Practical Applications
No practical applications. Theoretical framework for expressing galactic neighborhood distances.
Interesting Facts
The Milky Way galaxy has a diameter of about 10 Em (100,000 light-years).
Common Mistakes
Em is almost never used — astronomers use parsecs or light-years. It exists only for SI completeness.
Educational Tips
Just remember: Exa = 10¹⁸. The Milky Way is about 10 Em across for a sense of scale.