Astronomy DistanceEarth Diameters to Solar Radii

Earth Diameters to Solar Radii

Snapshot

1 Earth Diameter equals 0.018315391 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 Earth Diameters, the result equals 0.036630782 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

0.018315391 Solar Radii (R_sun)

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Machine access

Available to apps and AI agents

Earth Diameters 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: earth_diameters
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": "earth_diameters",
  "to": "solar_radii"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "astronomy-distance",
    "value": 1,
    "from": "earth_diameters",
    "to": "solar_radii",
    "result": {
      "raw": 0.0183153911169,
      "display": "0.018315391"
    },
    "canonicalPath": "/astronomy-distance/earth-diameters-to-solar-radii/"
  }
}

Full API documentation

Explanation

Formula: Solar Radii = Earth Diameters × 0.018315391. 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.

Earth Diameters (D_earth): a comparative planetary size-distance unit based on Earth's mean diameter.

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.

Method & Reference

Method basis: exact conversion formula shown in Snapshot.
Applied factor: 1 Earth Diameter = 0.018315391 Solar Radii.
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Earth Diameters (D_earth)	Solar Radii (R_sun)
1	0.018315391
2	0.036630782
5	0.091576956
10	0.183153911
100	1.831539
1,000	18.315391

Questions & answers

Frequently Asked Questions

How is Earth Diameters to Solar Radii calculated?

The factor is derived by reducing both units to meters and applying the fixed planetary or solar radius/diameter reference constants for the route.

How do I reverse Earth Diameters to Solar Radii?

Use the mirror Solar Radii to Earth Diameters route; it applies the inverse relationship for the opposite direction with the same assumptions.

Can I use decimal values for Earth Diameters to Solar Radii?

Yes. Decimal inputs are supported for Earth Diameters to Solar Radii, and the mirror direction keeps inverse assumptions aligned.