Minecraft Ore Vein Size Comparison (Ores)
Compare Minecraft Java ore vein sizes. Coal 17 to Ancient Debris 2 with exact world generation values for Overworld and Nether ores. Includes tables and sources
Visual comparison
All values
Click any row to load it as Entry A.
| Name | Value | Context | Source |
|---|---|---|---|
| Coal Ore Spawn size 17. Max about 37 blocks per placement. | 17 ores | Overworld ore blob, triangle placement | Minecraft Wiki Ore feature |
| Iron Ore Spawn size 9. Max about 13 blocks per placement. | 9 ores | Overworld ore blob, normal size | Minecraft Wiki Ore feature |
| Copper Ore Spawn size 10. Max about 16 blocks per placement. | 10 ores | Overworld ore blob, triangle placement | Minecraft Wiki Ore feature |
| Gold Ore Spawn size 9. Same normal size as iron. | 9 ores | Overworld ore blob, triangle placement | Minecraft Wiki Ore feature |
| Redstone Ore Spawn size 8. Max about 10 blocks per placement. | 8 ores | Overworld ore blob, uniform and triangle batches | Minecraft Wiki Ore feature |
| Lapis Lazuli Ore Spawn size 7. Max about 10 blocks per placement. | 7 ores | Overworld ore blob, triangle placement | Minecraft Wiki Ore feature |
| Diamond Ore Spawn size 8 from the large diamond batch. Small batch is size 4. | 8 ores | Overworld ore blob, large buried batch | Minecraft Wiki Ore feature |
| Emerald Ore Spawn size 3. Max about 4 blocks per placement. | 3 ores | Mountain biomes ore blob | Minecraft Wiki Ore feature |
| Nether Quartz Ore Spawn size 14. Max about 24 blocks per placement. | 14 ores | Nether ore blob, uniform placement | Minecraft Wiki Ore feature |
| Nether Gold Ore Spawn size 10. Max about 16 blocks per placement. | 10 ores | Nether ore blob, uniform placement | Minecraft Wiki Ore feature |
| Ancient Debris Large Scatter size 3. Placement gives up to 3 blocks. | 3 ores | Nether scatter ore, triangle placement | Minecraft Wiki Ore feature |
| Ancient Debris Small Scatter size 2. Placement gives up to 2 blocks. | 2 ores | Nether scatter ore, uniform placement | Minecraft Wiki Ore feature |
About this converter
Minecraft Java Edition places ores as blobs with a set spawn size. The spawn size sets the shape and the upper limit for blocks in one placement. Coal has a spawn size of 17. Copper has a spawn size of 10. Iron has a normal spawn size of 9 and a small spawn size of 4. Gold has a spawn size of 9. Redstone has a spawn size of 8. Lapis has a spawn size of 7. Diamond has sizes 4, 8 and 12. Emerald has a spawn size of 3. Nether quartz has a spawn size of 14. Ancient debris uses scatter placement with sizes 3 and 2.
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. Try Coal 17 against Diamond 8 to feel the gap. Try Quartz 14 against Nether Gold 10 for Nether planning. Values are spawn sizes for world generation, not drops.
Spawn size is not the same as the exact block count you will see in game. One placement can be smaller because stone shape, air exposure, and nearby blobs change the result. The list uses Java Edition values from the Ore feature page. Overworld ores use triangle or uniform placement by height. Nether ores use uniform placement in most zones. Ancient debris is a scatter ore, so size 3 means up to 3 blocks and size 2 means up to 2 blocks. Fortune results are left out here.
FAQ
What does spawn size mean in Minecraft?
Spawn size is the generation setting for one ore placement. It sets the upper limit for blocks in that blob.
Which ore has the largest spawn size here?
Coal Ore has the largest spawn size at 17. Nether Quartz Ore is next at 14.
Why is Ancient Debris so small?
Ancient Debris uses scatter placement in the Nether. Size 3 gives up to 3 blocks and size 2 gives up to 2 blocks.
Are these Java Edition values?
Yes. These are Java Edition spawn sizes from the Minecraft Wiki Ore feature page.
Sources
- Minecraft Wiki Ore feature, Coal Ore, Iron Ore, Nether Quartz Ore pages
Last verified: 2026-10-02 · 12 entries
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