Kilometers to Earth Radii

Snapshot

1 Kilometer equals 0.000157 Earth 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 fixed astronomy size constants anchored to meters.
Example: For 2 Kilometers, the result equals 0.000314 Earth 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.

Converter Calculator

0.000157 Earth Radii (R_earth)

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Explanation

This page converts Kilometers into Earth Radii using fixed astronomy size constants anchored to meters. The direct answer, calculator, and common values table all follow the same factor.

Formula: Earth Radii = Kilometers × 0.000157. Why: standard metric units are used as the common size basis, then planetary or stellar reference constants are applied to reach the target scale.

Kilometers (km): a practical metric unit for planetary and orbital size scales.

Earth Radii (R_earth): a planetary reference unit based on Earth's mean radius.

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

Because the route stays inside one meter-based reference model, the mirror page reverses the same constants without changing the underlying assumptions.

Method & Reference

Method basis: exact conversion formula shown in Snapshot.
Applied factor: 1 Kilometer = 0.000157 Earth Radii.
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Kilometers (km)	Earth Radii (R_earth)
1	0.000157
2	0.000314
5	0.000785
10	0.00157
100	0.015696
1,000	0.156961

Frequently Asked Questions

What is 1 kilometer in earth radii?

1 Kilometer equals 0.000157 Earth Radii on this page.

Does this Kilometers to Earth Radii 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 kilometers to earth radii?

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 Kilometers to Earth Radii?

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