Astronomy SizeAstronomical Units to Solar Radii

Astronomical Units to Solar Radii

Methodology·How We Verify

Snapshot

1 Astronomical Unit equals 215.032156 Solar Radii.

Reference basis: This conversion uses fixed astronomy size constants anchored to meters.
Example: For 2 Astronomical Units, the result equals 430.064311 Solar Radii.

Interactive conversion

Converter Calculator

Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.

215.032156 Solar Radii (R_sun)

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API and AI agent access

Astronomical Units to Solar Radii.

Machine-readable identifiers

Conversion family: astronomy-size
Source unit: astronomical_units
Target unit: solar_radii

Use these identifiers in the API request. Sources and model limits also apply to software clients.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "astronomy-size",
  "value": 1,
  "from": "astronomical_units",
  "to": "solar_radii"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "astronomy-size",
    "value": 1,
    "from": "astronomical_units",
    "to": "solar_radii",
    "result": {
      "raw": 215.032155671,
      "display": "215.032156"
    },
    "canonicalPath": "/astronomy-size/astronomical-units-to-solar-radii/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

Astronomical Units convert into solar radii using fixed astronomy size constants anchored to meters. Formula: R_sun = AU × 215.032155671. That keeps the snapshot, calculator, table, and mirror page aligned on one constant basis.

It is useful for comparing planetary, stellar, and orbital-scale size references without switching between inconsistent reference tables.

Method & Reference

Method basis: exact conversion formula shown in Snapshot.
Applied factor: 1 Astronomical Unit = 215.032156 Solar Radii.
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Astronomical Units (AU)	Solar Radii (R_sun)
1	215.032156
2	430.064311
5	1,075.160778
10	2,150.321557
100	21,503.215567
1000	215,032.155671

Questions & answers

Frequently Asked Questions

What is 1 astronomical unit in solar radii?

1 Astronomical Unit equals 215.032156 Solar Radii on this page.

Does this Astronomical Units to Solar Radii page use fixed solar reference constants?

Yes. Where solar radii or diameters appear, this page uses fixed solar reference constants normalized through meters before applying the target unit.

When would I convert astronomical units to solar radii?

This route is useful when translating between stellar size references and other astronomy scales so star-size comparisons stay on the intended unit basis.

How do I reverse Astronomical Units to Solar Radii?

Use the mirror Solar Radii to Astronomical Units route; it reverses the same astronomy size constants without changing the underlying assumptions.