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Free Minecraft Seed Tools

Last reviewed November 7, 2026 by the FreeSeedFinder editors

Every tool here is free, needs no account and runs in your browser, so your seeds, coordinates and files stay on your device. Each tool page explains how the calculation works, lists its sources and says which game versions it applies to.

Choose a tool

  • Illustration of a level.dat file being read to reveal a world seed
    Java + Bedrock beta

    World file seed reader

    Read the seed from level.dat or world_gen_settings.dat without opening the world.

  • Grid of chunks with slime chunks in green and the densest three by three area outlined
    Java Edition

    Slime chunk finder

    Map slime chunks for any Java seed and find the densest spot for a farm.

  • Overworld and Nether panels showing coordinates converted by a factor of eight
    Java + Bedrock

    Nether portal calculator

    Convert coordinates between dimensions and check whether two portals will link.

  • Two throw lines crossing at the estimated stronghold area inside a ring band
    Java Edition

    Stronghold locator

    Triangulate a stronghold from two eye of ender throws and check it against the rings.

  • The word glacier converted into the Java seed number 108181935
    Java Edition

    Text to seed converter

    See the exact number Java uses for any word or phrase you type as a seed.

World File Seed Reader

Drop in your level.dat or world_gen_settings.dat file and read the seed without opening the world. It understands the Java 26.1 change that moved world generation settings to a separate file, and has beta support for Bedrock.

Slime Chunk Finder

Enter a Java seed and coordinates to see every slime chunk on a map, the nearest chunks with block ranges, and the densest group of chunks for a farm.

Nether Portal Calculator

Convert coordinates between the Overworld and the Nether, and check whether two portals are far enough apart to link to different partners in Java or Bedrock.

Stronghold Locator

Throw two eyes of ender, enter your positions and yaw angles, or paste the F3+C command, and the tool finds where the lines cross, checks it against the Java stronghold rings and draws a map.

Text to seed converter

The converter on the homepage shows the exact number Java Edition uses for any text seed.

Need help using a tool?

Our guides explain the ideas behind each tool, for example how to find your seed before you use the slime chunk finder. If a result looks wrong, tell us on the contact page.