Astronomy DistanceAstronomical Units to Solar Radii

Astronomical Units to Solar Radii

Snapshot

1 Astronomical Unit equals 215.032156 Solar Radii. Conversion Encyclopedia uses the same fixed conversion basis across the calculator, common values, and reverse page for this page.

Reference basis: This conversion uses a fixed factor based on canonical reference constants.
Example: For 2 Astronomical Units, the result equals 430.064311 Solar Radii.
Use the reverse page if you need the opposite direction with the same basis.

Use the interactive calculator below for custom values and the common-value table for quick checks.

Interactive conversion

Converter Calculator

215.032156 Solar Radii (R_sun)

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Machine access

Available to apps and AI agents

Astronomical Units to Solar Radii can be requested through Conversion Encyclopedia's structured interfaces by software and compatible AI agents. The identifiers below select the same calculation as the calculator.

Machine-readable identifiers

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

The JSON API and OpenAPI specification use the identifiers to reach the conversion engine. WebMCP lets compatible AI agents request the same calculation.

Example API request and response

POST /api/v1/convert

Request

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

Essential response

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

Full API documentation

Explanation

This page answers the astronomy distance comparison directly: 1 astronomical unit is about 215.032156 solar radii on this page. That makes it useful when you want to compare orbital-scale distance to the size of the Sun using one fixed meter-based reference model.

The same factor is used throughout the direct answer, calculator, table, and mirror page, so the conversion stays consistent. This is useful for stellar system scale comparisons, orbital geometry references, and astronomy notes where AU and solar radii are both used.

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	1,075.161
10	2,150.322
100	21,503.216
215.025	46,237.289

Questions & answers

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.