Star Wars Planet Diameter Comparison (Kilometers)
Compare Star Wars planet diameters in km and miles. 14 planets, moons and stations with official Essential Atlas and Databank figures. Includes tables.
Visual comparison
All values
Click any row to load it as Entry A.
| Name | Value | Context | Source |
|---|---|---|---|
| Tatooine Circumbinary desert world with two suns. | 10,465 kilometers | Desert planet in the Outer Rim. Home of Anakin and Luke Skywalker | Star Wars Essential Atlas Del Rey 2009 Tatooine profile plus StarWars.com Databank |
| Alderaan Near Earth size. Earth mean is 12742 km. | 12,500 kilometers | Core Worlds planet. Home of Leia Organa. Destroyed by the Death Star | Star Wars Essential Atlas Del Rey 2009 Alderaan profile plus StarWars.com Databank Alderaan |
| Coruscant Ecumenopolis with planet wide levels. | 12,240 kilometers | City covered capital planet. Seat of the Republic and Empire | Star Wars Essential Atlas Del Rey 2009 Coruscant profile plus StarWars.com Databank Coruscant |
| Naboo Surface water is 12 percent. | 12,120 kilometers | Mid Rim planet. Home of Padme Amidala and Palpatine | Star Wars Essential Atlas Del Rey 2009 Naboo profile plus StarWars.com Databank Naboo |
| Hoth Close to Mars size. Mars mean is 6779 km. | 7,200 kilometers | Ice planet in the Outer Rim. Rebel Echo Base site | Star Wars Essential Atlas Del Rey 2009 Hoth profile plus StarWars.com Databank Hoth |
| Dagobah Murky world with dense fog. | 8,900 kilometers | Swamp planet in the Outer Rim. Yoda exile site | Star Wars Essential Guide to Planets and Moons Del Rey Dagobah profile |
| Bespin No solid ground. Similar to Saturn size. | 118,000 kilometers | Gas giant in the Outer Rim. Cloud City floats in its air | Star Wars Essential Atlas Del Rey 2009 Bespin profile |
| Endor - Forest Moon Slightly larger than Mercury at 4879 km. | 4,900 kilometers | Forest moon that orbits the Endor planet. Ewok home. Second Death Star site | Star Wars Essential Atlas Del Rey 2009 Endor moon profile |
| Yavin IV Fourth moon in its system. | 10,200 kilometers | Jungle moon that orbits Yavin Prime. Rebel base in A New Hope | Star Wars Essential Atlas Del Rey 2009 Yavin IV profile |
| Yavin Prime Largest body in this set. | 198,500 kilometers | Huge gas giant in the Outer Rim. Host to Yavin IV | Star Wars Essential Atlas Del Rey 2009 Yavin system profile |
| Geonosis Ringed world with 15 moons in Legends count. | 11,370 kilometers | Rocky desert planet. Droid foundries. First Clone Wars battle | Star Wars Essential Atlas Del Rey 2009 Geonosis profile |
| Kamino Surface water is 100 percent. | 19,270 kilometers | Ocean planet in Wild Space. Clone army source | Star Wars Essential Atlas Del Rey 2009 Kamino profile |
| Death Star I Older guides list 120 km. Latest official Inside Intel lists 160 km. This entry uses 160 km. | 160 kilometers | Imperial battle station. Planet killing superlaser. Moon size station | StarWars.com Inside Intel The Death Star |
| Endor - Gas Giant Planet Novel claims of loss were fixed by the Atlas as a false report. | 148,000 kilometers | Gas giant called Tana by Ewoks. Host to the Forest Moon | Star Wars Essential Atlas Del Rey 2009 Endor planet profile |
About this converter
Star Wars planets range from small moons to huge gas giants. This page lists diameter in kilometers. The range here runs from 160 km for the Death Star to 198500 km for Yavin Prime. Earth-size worlds sit near 12000 km. Figures come from the Essential Atlas and Essential Guide to Planets and Moons. Both are Del Rey books made with Lucasfilm. Recent StarWars.com posts confirm the Atlas as the map source. Databank pages confirm each world but do not list size. Canon and Legends differ on some stations.
How to use it
Pick two entries and a unit in the top row. The three boxes below stay linked. Change any box and the other two update. Start with Tatooine and Alderaan. Then test Hoth against Bespin. Switch the top unit from Kilometers to Miles or Meters. The three boxes update at once. Gas giants dwarf rocky worlds fast.
Diameters match Essential Atlas planet profiles and StarWars.com Inside Intel for the Death Star. Tatooine is 10465 km. Alderaan is 12500 km. Coruscant is 12240 km. Naboo is 12120 km. Hoth is 7200 km. Bespin is 118000 km. Starkiller Base, Exegol, Ahch-To, and similar new worlds are left out. No official diameter exists for them in Atlas or Databank. Second Death Star size claims from 160 to 900 km are left out as a separate row. Only the first station has a firm 160 km figure.
FAQ
How big is the first Death Star officially?
160 km wide. StarWars.com Inside Intel lists 160 km. Older guides list 120 km.
Which is bigger, Tatooine or Alderaan?
Alderaan at 12500 km. Tatooine is 10465 km. Alderaan is near Earth size.
Is Endor a planet or a moon?
Both names exist. The Forest Moon is 4900 km. The gas planet is 148000 km.
Where do diameters come from?
Essential Atlas from Del Rey with Lucasfilm. StarWars.com confirms the book as map source.
Sources
- Star Wars Essential Atlas Del Rey 2009 by Wallace and Fry
- StarWars.com Essential Atlas mapping a living book
- StarWars.com Inside Intel The Death Star 160 km
- StarWars.com Databank Coruscant Alderaan Death Star
Last verified: 2026-10-02 · 14 entries
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