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World

See what a world holds before you travel, and plan where to build, mine and settle.

5 tools 15 languages Java + Bedrock No signup

Seed Map

Type a seed and see the world before you play it: biomes, villages, ocean monuments, slime chunks and more. Java and Bedrock, 1.20 through 26.2, in your browser.

3D Seed Viewer

Look at any Minecraft seed in 3D: real terrain height, trees and structure markers across the overworld, nether and end. Java and Bedrock, nothing to download.

Ore Distribution

Best Y-levels for every ore, drawn from the game's real worldgen data — drag to your mining depth.

Minecraft World & Biomes Tools

Browse biomes, ore Y-levels, structures, dimensions, and flat world presets.

World Border & Difficulty Tools

Plan your world's playable area with ready /worldborder commands, and compare difficulty/gamemode settings.

Latest guides

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Biome temperature decides rain, snow or nothing — and 18 biomes get no weather at all

66 biomes in 26.2. Every biome at temperature 2.0 is dry, all six remaining dry ones are in the End, and only 10 biomes actually snow.

Six version options, four world generators — three of them are the same world

26.1, 26.2 and 26.x all resolve to one generator, so a seed gives identical terrain in all three. But 1.21.0 and 1.21 do not, and that catches people mid-line.

World generation changed twice since 1.20, at 1.21.2 and 1.21.4 — and not since

The four generator ranges, spelled out. Everything from 1.21.4 through 26.2 shares one generator, so a seed checked on any of them is correct on all of them.

/worldborder has ten forms, and only two of them animate

set and add take an optional time argument that shrinks the border gradually; the other eight are instant. Plus what Minecraft's four border defaults actually mean.

Best Y level for every ore after the world height change

Diamonds are not at Y=11 any more. Each ore now has a triangular distribution with its own peak, and a few have a second band. Here are the real numbers from worldgen.