Solar Radii to Astronomical Units
1 solar radius is about 0.004650467261 astronomical units on this page.
Direct Answer
1 Solar Radius equals 0.004650467261 Astronomical Units
This conversion uses a fixed factor based on canonical reference constants.
For 2 Solar Radii, the result equals 0.009300934522 Astronomical Units.
Converter Calculator
0.004650467261 Astronomical Units (AU)
SwitchExplanation
Formula: Astronomical Units = Solar Radii × 0.004650467261. Why: AU, lunar distance, and planetary radius or diameter units are tied to fixed astronomy reference constants, so the route moves through one meter-based normalization path.
Solar Radii (R_sun): a stellar scale unit based on the Sun's reference radius, common in astronomy comparisons.
Astronomical Units (AU): a standard astronomy distance unit defined exactly as 149,597,870,700 meters, commonly used for Solar System scales.
This route is useful when comparing Solar System and planetary-scale distances using AU, lunar-distance, and Earth or Solar reference units.
This conversion is purely multiplicative because both units reduce through meters using fixed astronomical or geometric reference constants with no offset.
Common Conversion Values
| Solar Radii (R_sun) | Astronomical Units (AU) |
|---|---|
| 1 | 0.004650467261 |
| 2 | 0.009300934522 |
| 5 | 0.023252336 |
| 10 | 0.046504673 |
| 100 | 0.465046726 |
| 1,000 | 4.650467 |
Frequently Asked Questions
How many astronomical units are in 1 solar radius?
1 solar radius is about 0.004650467261 astronomical units on this page.
Is this the reverse of the AU to solar radii page?
Yes. This page uses the same fixed astronomy distance constants as the mirror page, only reversed to estimate astronomical units from solar radii.
Why is 1 solar radius such a small fraction of an AU?
Because an astronomical unit is much larger than the radius of the Sun, so one solar radius is only a small fraction of 1 AU.