Island Area Comparison (Square KM)
What is the largest island? Compare 12 island areas, from Greenland 2166086 down to Luzon 109965 sq km. Britannica and WorldAtlas data. All 12 islands ranked.
Visual comparison
All values
Click any row to load it as Entry A.
| Name | Value | Context | Source |
|---|---|---|---|
| Greenland 2166086 sq km. Top row here. Variants noted. | 2,166,086 square kilometers | North Atlantic, Denmark | Britannica largest islands: Greenland 2,166,086 sq km; WorldAtlas: Greenland 2,166,086 sq km; Wikipedia variant 2,108,459 noted |
| New Guinea 785753 sq km. Highest island at 5030 m. | 785,753 square kilometers | Pacific, Indonesia and PNG | WorldAtlas largest islands: New Guinea 785,753 sq km; Britannica variant 821,400 noted |
| Borneo 748168 sq km. Largest Asian island. | 748,168 square kilometers | Southeast Asia, three nations | Britannica largest islands: Borneo 748,168 sq km; WorldAtlas variant 743,330 noted |
| Madagascar 587713 sq km. Largest African island. | 587,713 square kilometers | Indian Ocean, Madagascar nation | WorldAtlas largest islands: Madagascar 587,713 sq km; Britannica 587,295 noted |
| Baffin Island 507451 sq km. Largest Canadian island. | 507,451 square kilometers | Canadian Arctic, Nunavut | WorldAtlas largest islands: Baffin Island 507,451 sq km; Britannica variant noted |
| Sumatra 443066 sq km. Sixth row here. | 443,066 square kilometers | Indonesia, sixth largest | WorldAtlas largest islands: Sumatra 443,066 sq km |
| Honshu 225800 sq km. Mount Fuji stands here. | 225,800 square kilometers | Japan, largest home island | WorldAtlas largest islands: Honshu 225,800 sq km |
| Victoria Island 217291 sq km. Second Arctic row. | 217,291 square kilometers | Canadian Arctic, Nunavut | WorldAtlas largest islands: Victoria Island 217,291 sq km |
| Great Britain 209331 sq km. Ninth row here. | 209,331 square kilometers | United Kingdom, home island | WorldAtlas largest islands: Great Britain 209,331 sq km |
| Ellesmere Island 183965 sq km. Third Arctic row. | 183,965 square kilometers | Canadian Arctic, Nunavut | WorldAtlas largest islands: Ellesmere Island 183,965 sq km |
| Sulawesi 180681 sq km. Eleventh row here. | 180,681 square kilometers | Indonesia, orchid shaped | Island area references: Sulawesi 180,681 sq km |
| Luzon 109965 sq km. Lowest row here. | 109,965 square kilometers | Philippines, largest island | Island area references: Luzon 109,965 sq km |
About this converter
Island areas run 109965 to 2166086 square km in this table. Greenland leads at 2166086, more than double New Guinea at 785753. Borneo follows at 743330, Madagascar 587713, Baffin 507451 and Sumatra 443066. Honshu runs 225800, Victoria 217291, Great Britain 209331 and Ellesmere 183965. Sulawesi sits at 180681 and Luzon closes at 109965. One Greenland matches almost twelve Ellesmeres. Coastline measures move totals by source, so the table pins WorldAtlas and Britannica with Wikipedia variants noted.
How to use it
Pick two islands and a unit in the top row. The three boxes below stay linked. Change any box and the other two update. Try 1 Greenland against Ellesmere to see the near twelve to one gap in square km or square miles.
Values pin main island areas with offshore islets noted where sources split them. Greenland counts vary from 2108459 to 2175600 by coastline measure, which the table notes. Australia stays out because continents are not islands. New Guinea high point and country splits ride in notes where they sharpen a row.
FAQ
What is the largest island?
Greenland at 2,166,086 sq km. Australia is a continent, so it stays out.
What is the second largest?
New Guinea at 785,753 sq km. Borneo follows at 748,168.
Why do island areas disagree?
Yes. Coastline measures move Greenland from 2,108,459 to 2,175,600. The table pins 2,166,086 with variants noted.
Is Australia an island?
No. Australia counts as a continent, so it stays out of island rows even though water surrounds it.
Sources
- Britannica largest islands in the world (Greenland 2,166,086, New Guinea 821,400, Borneo 748,168, Madagascar 587,295, Baffin 507,451 sq km)
- WorldAtlas largest islands top 10 (Greenland 2,166,086 through Ellesmere 183,965 sq km) and geography table (New Guinea 785,753, Madagascar 587,713, Baffin 507,451)
- Wikipedia list of islands by area (Greenland 2,108,459 and New Guinea 773,751 variants noted); InfoPlease top 10 cross-check
Last verified: 2026-10-02 · 12 entries
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