Sun's Radius to Exameter Converter
Unit Converter
Instant · Precise · Universal
32 units available
6 categories total
How to Convert Sun's Radius to Exameter
To convert solar radii to km: multiply by 696,340. To convert solar radii to AU: multiply by 0.00465.
1 R☉ = 6.9634 × 10⁸ m = 696,340 km ≈ 109 × Earth's radius ≈ 0.00465 AU.
For example, 1 Sun's Radius (R☉) = 6.963400e-10 Exameter (Em).
Sun's Radius to Exameter — Common Values
| Sun's Radius (R☉) | Exameter (Em) |
|---|---|
| 0.1 | 6.963400e-11 |
| 0.5 | 3.481700e-10 |
| 1 | 6.963400e-10 |
| 2 | 1.392680e-9 |
| 5 | 3.481700e-9 |
| 10 | 6.963400e-9 |
| 25 | 1.740850e-8 |
| 50 | 3.481700e-8 |
| 100 | 6.963400e-8 |
| 500 | 3.481700e-7 |
| 1000 | 6.963400e-7 |
About Sun's Radius (R☉)
Definition
The solar radius is the radius of the Sun, approximately 6.9634 × 10⁸ meters (about 696,340 km).
Mathematical Relationship
1 R☉ = 6.9634 × 10⁸ m = 696,340 km ≈ 109 × Earth's radius ≈ 0.00465 AU.
Conversion Formula
To convert solar radii to km: multiply by 696,340. To convert solar radii to AU: multiply by 0.00465.
Practical Applications
Describing stellar sizes: Betelgeuse ≈ 700 R☉, Sirius ≈ 1.7 R☉, a white dwarf ≈ 0.01 R☉.
Interesting Facts
You could line up about 109 Earths across the Sun's diameter. The largest known star (UY Scuti) is about 1,700 R☉.
Common Mistakes
Confusing solar radius with solar diameter — the diameter is 2 R☉. Also, stellar catalogs list radius, not diameter.
Educational Tips
The Sun's radius (109 × Earth) gives a sense of scale: you could fit over a million Earths inside the Sun by volume.
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.