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Head-to-head · Minecraft Seed Map Tools

Chunkbase vs SeedMapper

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Chunkbase #2 in Minecraft Seed Map Tools 9.3/10 Free · no account needed Free plan✓ 4 of 5 features Open Chunkbase
SeedMapper #5 in Minecraft Seed Map Tools 8.0/10 Free · open source (LGPL) Free plan✓ 3 of 5 features Get SeedMapper

Chunkbase leads on 2 checks, SeedMapper on 0, and 4 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreChunkbase · 9.3/10
  • Free planboth
  • Most featuresChunkbase · 4 of 5

Chunkbase scores higher on our rubric for minecraft seed map tools: 9.3 against 8.0 out of 10; our editors rank them #2 and #5.

Chunkbase offers bedrock edition; SeedMapper doesn't. Chunkbase offers seed finder; SeedMapper doesn't.

Chunkbase is the better fit for finding structures and biomes in an existing world. SeedMapper is the better fit for java players who want seed data in-game.

  • Chunkbase fits best

    Finding structures and biomes in an existing world

  • SeedMapper fits best

    Java players who want seed data in-game

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Side by side

Feature Chunkbase 9.3/10 Visit ↗ SeedMapper 8.0/10 Visit ↗
At a glance
Editor score 9.3 8.0
Ranking #2 in Minecraft Seed Map Tools #5 in Minecraft Seed Map Tools
Best for Finding structures and biomes in an existing world Java players who want seed data in-game
Pricing model Free Free
Starting price Free · no account needed Free · open source (LGPL)
Free plan ✓ ✓
Free trial — —
Features Chunkbase 4/5 · SeedMapper 3/5
Java Edition ✓ ✓
Bedrock Edition ✓ (best) —
Seed finder ✓ (best) —
Nether & End maps ✓ ✓
Open source Not checked yet ✓ (best)
Specs
Runs on Browser Fabric mod (Java Edition)
Newest Java version 26.3 26.3
Our review
Pros
  • Covers Java 1.7 to 26.3 with Large Biomes, and Bedrock from 1.14 to 26.50
  • Advanced search mixes targets with nearby biome, feature and terrain conditions
  • Reads the seed from a save file and keeps named markers for each world
  • In-game seed map and a rotating HUD minimap from the configured seed
  • Locate commands cover biomes, structures, ore veins and chest loot
  • Builds for Minecraft 1.16.5 through 26.3, updated several times a month
Cons
  • Markers and completed spots stay in one browser unless you export them
  • Dungeons, world spawn and geodes are flagged as not fully reliable
  • Some small structures point only to their chunk's centre, not the exact block
  • Java Edition with Fabric only; Bedrock players cannot use it
  • You must know the seed first, or crack it with a separate mod
  • Versions 1.21.11 and older need Java 23 set up in the launcher by hand
Our verdict

Chunkbase is the seed map most other tools get measured against. Type or paste a seed, pick the edition and version the world was generated on, and the Overworld, Nether or End appears with biomes and around thirty toggleable features,…

Read the review →

SeedMapper brings the seed map into Minecraft Java Edition itself. It is a client-side Fabric mod, free and open source under the LGPL, distributed through Modrinth with builds for Minecraft 1.16.5 through 26.3. After the seed is set with…

Read the review →
  1. ChunkbaseMinecraft Seed Map Tools 9.3Free · no account needed
  2. SeedMapperMinecraft Seed Map Tools 8.0Free · open source (LGPL)

Strengths and trade-offs

  • Chunkbase — where it wins

    • Covers Java 1.7 to 26.3 with Large Biomes, and Bedrock from 1.14 to 26.50
    • Advanced search mixes targets with nearby biome, feature and terrain conditions
    • Reads the seed from a save file and keeps named markers for each world

    Where it doesn't

    • Markers and completed spots stay in one browser unless you export them
    • Dungeons, world spawn and geodes are flagged as not fully reliable
    • Some small structures point only to their chunk's centre, not the exact block

  • SeedMapper — where it wins

    • In-game seed map and a rotating HUD minimap from the configured seed
    • Locate commands cover biomes, structures, ore veins and chest loot
    • Builds for Minecraft 1.16.5 through 26.3, updated several times a month

    Where it doesn't

    • Java Edition with Fabric only; Bedrock players cannot use it
    • You must know the seed first, or crack it with a separate mod
    • Versions 1.21.11 and older need Java 23 set up in the launcher by hand
  • Chunkbase9.3/10 · Free · no account needed

    The reference seed map: Java back to 1.7, Bedrock up to 26.50, advanced search and a seed finder, all free.

    Open ChunkbaseFull verdict →
  • SeedMapper8.0/10 · Free · open source (LGPL)

    A seed map without leaving the game: explorable map, HUD minimap and commands to locate biomes, loot and ores.

    Get SeedMapperFull verdict →

More comparisons

All minecraft seed map tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update