COOKIE TOOLS · GUIDES

Minecraft Java Seed Map & Biome Finder

Explore exact sampled Java 1.21.11 Overworld biomes from a numeric or text seed. Pan, zoom, choose Y, highlight a biome and export PNG, CSV or JSON.

FreeNo sign-upBrowser-basedJava 1.21.11 data

Your result

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Copy-ready output

How to use

Enter a seed and map center, choose sample Y, grid radius and spacing. Pan or zoom the bounded grid; tap cells for exact sampled coordinates.
The MIT Cubiomes 1.21.5+ engine is pinned and independently compared to 4,138 official 1.21.11 block-biome samples, including negative/extreme seeds and Pale Garden boundaries.

Examples

Signed seed −1

Uses all 64 seed bits without JavaScript Number precision loss.

Biome search

Highlights matching samples and reports the nearest sampled match, not a global nearest-biome guarantee.

Supported versions & limitations

Verified Java dataset: 1.21.11

Normal vanilla Java 1.21.11 Overworld only; no Bedrock, large-biomes, custom datapacks, terrain heights or Cookie SMP seed access. Cells are exact block-biome samples at selected Y; unsampled space is not inferred. Radius ≤32, spacing ≤256 blocks.

Frequently asked questions

Which versions and scope does this tool support?

Normal vanilla Java 1.21.11 Overworld only; no Bedrock, large-biomes, custom datapacks, terrain heights or Cookie SMP seed access. Cells are exact block-biome samples at selected Y; unsampled space is not inferred. Radius ≤32, spacing ≤256 blocks.

How is the result checked?

The MIT Cubiomes 1.21.5+ engine is pinned and independently compared to 4,138 official 1.21.11 block-biome samples, including negative/extreme seeds and Pale Garden boundaries.

Sources

Facts reviewed 2026-10-16. Supported scope and preview limitations are described above.