Astronomical Units to Solar Radii
1 astronomical unit is about 215.032156 solar radii on this page.
Direct Answer
1 Astronomical Unit equals 215.032156 Solar Radii
This conversion uses a fixed factor based on canonical reference constants.
For 2 Astronomical Units, the result equals 430.064311 Solar Radii.
Converter Calculator
215.032156 Solar Radii (R_sun)
SwitchExplanation
Formula: Solar Radii = Astronomical Units × 215.032156. 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.
Astronomical Units (AU): a standard astronomy distance unit defined exactly as 149,597,870,700 meters, commonly used for Solar System scales.
Solar Radii (R_sun): a stellar scale unit based on the Sun's reference radius, common in astronomy comparisons.
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
| Astronomical Units (AU) | Solar Radii (R_sun) |
|---|---|
| 1 | 215.032156 |
| 2 | 430.064311 |
| 5 | 1,075.161 |
| 10 | 2,150.322 |
| 100 | 21,503.216 |
| 1,000 | 215,032.156 |
Frequently Asked Questions
How many solar radii are in 1 AU?
1 astronomical unit is about 215.032156 solar radii on this page.
What is 1 AU in solar radii?
Using the fixed astronomy distance constants on this page, 1 AU is about 215.032156 solar radii.
Does this page use fixed astronomy distance constants?
Yes. The conversion is anchored to fixed meter-based astronomy distance constants so the factor stays consistent across the page.