Astronomy DistanceEarth Radii to Kilometers

Earth Radii to Kilometers

Methodology·How We Verify

Snapshot

1 Earth Radius equals 6,371.009 Kilometers.

Reference basis: This conversion uses a fixed factor based on canonical reference constants.
Example: For 2 Earth Radii, the result equals 12,742.018 Kilometers.

Interactive conversion

Converter Calculator

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

6,371.009 Kilometers (km)

Switch

API and AI agent access

Earth Radii to Kilometers.

Machine-readable identifiers

Conversion family: astronomy-distance
Source unit: earth_radii
Target unit: kilometers

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-distance",
  "value": 1,
  "from": "earth_radii",
  "to": "kilometers"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "astronomy-distance",
    "value": 1,
    "from": "earth_radii",
    "to": "kilometers",
    "result": {
      "raw": 6371.0088,
      "display": "6,371.009"
    },
    "canonicalPath": "/astronomy-distance/earth-radii-to-kilometers/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

Earth Radii convert into kilometers by reducing both units to meters and applying one fixed astronomy distance ratio.

Method & Reference

Method basis: exact conversion formula shown in Snapshot.
Applied factor: 1 Earth Radius = 6,371.009 Kilometers.
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Earth Radii (R_earth)	Kilometers (km)
1	6,371.009
2	12,742.018
5	31,855.044
10	63,710.088
100	637,100.88
1000	6,371,008.8

Questions & answers

Frequently Asked Questions

How is Earth Radii to Kilometers 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 Radii to Kilometers?

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