What does Planet Distance Converter do?
Convert distances between planets using AU, kilometers, and miles.
Convert distances between planets using AU, kilometers, and miles.
Convert distances between planets using AU, kilometers, and miles.
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.
Concise answers for common searches — definitions, steps, and comparisons.
Convert distances between planets using AU, kilometers, and miles.
Planet Distance Converter (/planet-distance-converter) runs in your browser when supported—inputs are not uploaded to EverydayTools servers.
Distances use mean semi-major axis (average Sun–planet spacing), not instantaneous separation.
Formula
Gap ≈ |a₁ − a₂| in AU (educational mean radii)Load Planet Distance Converter on EverydayTools—no account required.
Type, paste, or upload depending on what the tool accepts.
Results update in your browser for typical use cases.
Copy the output or use download/export when available.
Input
Earth and Mars semi-major axesOutput
≈ 0.52 AU heliocentric gap (mean |a₁ − a₂|)Useful for scale models—not the distance between planets tonight, which changes as they orbit.
Common real-world scenarios where this tool saves time.
Educators
Tie AU definitions to concrete km and mile conversions.
Convert distances between planets using AU, kilometers, and miles.
Use when you want results without uploading files—local browser processing when the tool supports it.
Open Planet Distance Converter in any modern browser for quick checks with copy-friendly output.
How this EverydayTools page compares for typical use.
| Aspect | EverydayTools | Typical alternative |
|---|---|---|
| Cost | Free | Paid apps or trials |
| Privacy | Browser-local when supported | Often requires cloud upload |
| Signup | Not required | Often required |
AU values are average heliocentric radii—actual separation changes as planets orbit.
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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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.
One AU is 149,597,870.7 km—the nominal mean Earth–Sun distance used across the solar system.
No. Planet–planet distance changes along orbits. We show mean orbital radii for teaching, not ephemeris data for a specific date.
Convert distances between planets using AU, kilometers, and miles.
Planet Distance Converter (/planet-distance-converter) runs in your browser when supported—inputs are not uploaded to EverydayTools servers.
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.
Solar system scale
Browse each planet's mean distance from the Sun (semi-major axis), convert astronomical units to kilometers and miles, and compare average heliocentric spacing between two worlds. For orbital time, pair this with the Orbital Year Converter and Length Converter for everyday meters and feet.
Quick reference
1 AU ≈ 149,597,870.7 km ≈ 92,955,807 statute miles
Earth's mean orbit is defined as 1 AU on this page for consistency with classroom fact sheets.
Tap a card to jump to the converter with that value loaded. Your URL updates for sharing.
Sorted by AU. Bar length scales to Pluto's mean semi-major axis (39.482 AU).
≈ 57.894 million km · ≈ 35.974 million mi · light ≈ 3.22 minutes
≈ 108.159 million km · ≈ 67.207 million mi · light ≈ 6.01 minutes
≈ 149.598 million km · ≈ 92.956 million mi · light ≈ 8.32 minutes
≈ 227.987 million km · ≈ 141.665 million mi · light ≈ 12.67 minutes
≈ 778.358 million km · ≈ 483.649 million mi · light ≈ 43.27 minutes
≈ 1.427 billion km · ≈ 886.520 million mi · light ≈ 79.32 minutes
≈ 2.871 billion km · ≈ 1.784 billion mi · light ≈ 2.66 hours
≈ 4.498 billion km · ≈ 2.795 billion mi · light ≈ 4.17 hours
≈ 5.906 billion km · ≈ 3.670 billion mi · light ≈ 5.47 hours
AU
1
from Sun (mean)
Kilometers
149.598 million km
rounded display
Miles
92.956 million mi
statute miles
One-way light time from the Sun: 8.32 minutes
Non-negative number; comma or dot as decimal separator.
AU: 1
Kilometers: 149.598 million km
Miles: 92.956 million mi
Gigameters: 149.597871 Gm
Compared to Earth's mean orbit
Your distance is about 1 × 1 AU (149.598 million km vs 149.598 million km).
We show |a₁ − a₂| using each world's mean semi-major axis—the difference in average Sun distance. That is not the straight-line distance between planets on a given day.
0.524 AU
≈ 78.389 million km · ≈ 48.709 million mi