Astronomy SizeEarth Radii to Astronomical Units

Earth Radii to Astronomical Units

Methodology·How We Verify

Snapshot

1 Earth Radius equals 0.000043 Astronomical Units.

Reference basis: This conversion uses fixed astronomy size constants anchored to meters.
Example: For 2 Earth Radii, the result equals 0.000085 Astronomical Units.

Interactive conversion

Converter Calculator

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

0.000043 Astronomical Units (AU)

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API and AI agent access

Earth Radii to Astronomical Units.

Machine-readable identifiers

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

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": "earth_radii",
  "to": "astronomical_units"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "astronomy-size",
    "value": 1,
    "from": "earth_radii",
    "to": "astronomical_units",
    "result": {
      "raw": 0.0000425875633803,
      "display": "0.000043"
    },
    "canonicalPath": "/astronomy-size/earth-radii-to-astronomical-units/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

Earth Radii convert into astronomical units using fixed astronomy size constants anchored to meters. Formula: AU = R_earth × 0.0000425875633803. 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 Earth Radius = 0.000043 Astronomical Units.
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Earth Radii (R_earth)	Astronomical Units (AU)
1	0.000043
2	0.000085
5	0.000213
10	0.000426
100	0.004259
1000	0.042588

Questions & answers

Frequently Asked Questions

What is 1 earth radius in astronomical units?

1 Earth Radius equals 0.000043 Astronomical Units on this page.

Does this Earth Radii to Astronomical Units page convert through meters first?

Yes. Standard metric units act as the shared size basis, and the astronomy reference unit is then applied through its fixed meter constant.

When would I convert earth radii to astronomical units?

This route is useful when expressing planetary or stellar size references in metric units, or restating metric sizes in familiar astronomy reference scales.

How do I reverse Earth Radii to Astronomical Units?

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