Planet Distance Converter

Convert distances between planets using AU, kilometers, and miles.

Planet Distance Converter

Convert distances between planets using AU, kilometers, and miles.

By Muhammad Abdullah Rauf · Founder, EverydayTools.proUpdated 2026-05-17

What is Planet Distance Converter?

A planet distance converter shows mean Sun–planet distances (semi-major axis) in astronomical units, kilometers, and miles, and compares the average orbital spacing between two worlds.

Free planet distance converter — convert between astronomical units (AU), kilometers, and miles for solar system distances. See how far each planet is from the Sun. No signup. Runs locally in your browser when supported—no upload required for normal use.

Quick answers

Concise answers for common searches — definitions, steps, and comparisons.

What does Planet Distance Converter do?

Convert distances between planets using AU, kilometers, and miles.

Is Planet Distance Converter private?

Planet Distance Converter (/planet-distance-converter) runs in your browser when supported—inputs are not uploaded to EverydayTools servers.

Heliocentric distance comparison

Distances use mean semi-major axis (average Sun–planet spacing), not instantaneous separation.

Formula

Gap ≈ |a₁ − a₂| in AU (educational mean radii)

Assumptions

  • Two-body heliocentric model

Limitations

  • Not real-time conjunction/opposition distances

How to use Planet Distance Converter

  1. Open the tool

    Load Planet Distance Converter on EverydayTools—no account required.

  2. Enter your input

    Type, paste, or upload depending on what the tool accepts.

  3. Review results

    Results update in your browser for typical use cases.

  4. Copy or export

    Copy the output or use download/export when available.

Planet Distance Converter examples

Earth to Mars mean spacing

Input

Earth and Mars semi-major axes

Output

≈ 0.52 AU heliocentric gap (mean |a₁ − a₂|)

Useful for scale models—not the distance between planets tonight, which changes as they orbit.

Who uses Planet Distance Converter?

Common real-world scenarios where this tool saves time.

Educators

Solar system scale lessons

Tie AU definitions to concrete km and mile conversions.

Everyday use

Convert distances between planets using AU, kilometers, and miles.

Privacy-first workflows

Use when you want results without uploading files—local browser processing when the tool supports it.

Mobile and desktop

Open Planet Distance Converter in any modern browser for quick checks with copy-friendly output.

Reference tables

Planet Distance Converter at a glance

How this EverydayTools page compares for typical use.

AspectEverydayToolsTypical alternative
CostFreePaid apps or trials
PrivacyBrowser-local when supportedOften requires cloud upload
SignupNot requiredOften required

Common mistakes to avoid

Treating mean Sun distance as tonight’s planet spacing

AU values are average heliocentric radii—actual separation changes as planets orbit.

Troubleshooting

Custom AU value looks wrong

Likely cause: Unit mix-up between AU, km, and miles.

Fix: Re-select the input unit and confirm you did not double-convert.

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Frequently Asked Questions

What does this planet distance converter show?

Mean distances from the Sun in AU, km, and miles, plus optional heliocentric gap between two planets using semi-major axes—not real-time separation.

What is an astronomical unit (AU)?

One AU is 149,597,870.7 km—the nominal mean Earth–Sun distance used across the solar system.

Is this the same as the distance between two planets right now?

No. Planet–planet distance changes along orbits. We show mean orbital radii for teaching, not ephemeris data for a specific date.

What does Planet Distance Converter do?

Convert distances between planets using AU, kilometers, and miles.

Is Planet Distance Converter private on EverydayTools?

Planet Distance Converter (/planet-distance-converter) runs in your browser when supported—inputs are not uploaded to EverydayTools servers.

Privacy, accuracy, and trust

Privacy

All calculations run locally in your browser.

Part of Date & Time Tools

More free tools for the same workflow.

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Reviewed by EverydayTools Editorial Team on 2026-05-28.