Why does my text seed become a different number in Minecraft?

Minecraft Java Edition converts string seeds using Java's String.hashCode() algorithm, which produces a 32-bit signed integer. This tool replicates that conversion exactly, so you can see the numeric value Minecraft will use internally.

Does Bedrock Edition use the same seed numbers as Java Edition?

Modern Java 1.18.2+ and Bedrock 1.18.30+ accept signed 64-bit numeric seeds. Reusing the same number can broadly align terrain and biomes, but structures, decorators, carver caves, and mob spawning can differ. This is not a world converter.

Can I use negative seed numbers in Minecraft?

Yes. Minecraft accepts negative seed values. You can type a negative number directly in the in-game seed field. String.hashCode() frequently produces negative numbers, which is normal.

What is the range of valid Minecraft seed values?

Modern Java and Bedrock support signed 64-bit integers (-2^63 to 2^63-1). Entering text in Java hashes it to a signed 32-bit integer. A numeric-looking value outside the signed 64-bit range also follows Java's text-hash fallback.

Do I need to add 4294967296 to convert a Bedrock seed to Java?

Not in current versions. Adding or subtracting 4294967296 (2^32) only switches between the signed and unsigned spelling of the same 32 bits, which mattered when Pocket and Bedrock Edition used 32-bit seeds. Java has read the full signed 64-bit number since Beta 1.3 and Bedrock does since 1.18.30, so -12345 and 4294954951 are two different worlds. Type the same number in both editions instead.

How do I find the seed of my Minecraft world?

In Java Edition type /seed in chat; it works in singleplayer without cheats, while servers require operator permission. In Bedrock Edition open the world's settings with the edit (pencil) button and read the Seed field on the Game tab. Paste the number here to see its hex, sign and 32-bit forms.

Which text seeds give seed 0?

Any text whose Java hashCode is 0, for example "zsjpxah", "creashaks organzine" and "pollinating sandboxes". Since snapshot 22w03a (Java 1.18.2) the number 0 itself is also a valid seed; in older versions entering 0 gave a random world.

Does this tool send my seed to a server?

No. All computation runs locally in your browser using JavaScript. Nothing is transmitted or stored.

Can I convert a seed number back to text?

No. String.hashCode() maps many different phrases to the same number, so a number cannot be turned back into one original word. A number outside the signed 32-bit range (-2,147,483,648 to 2,147,483,647) cannot come from a Java text seed at all.

Can this tool show what is in a seed, such as villages or biomes?

No. It inspects the seed value only. To preview a world, create it in the game or open the seed in a seed map viewer that matches your edition and version.

Minecraft Seed Info

Convert a Java text seed to its signed 32-bit hash, inspect signed 64-bit numeric seeds, and copy the value for modern Java or Bedrock.

Java Edition turns a text seed into a number with Java's String.hashCode(), which gives a signed 32-bit integer.

Seed Converter

Enter a word, phrase, or number

Enter a seed above to see its properties

Using Seeds in Minecraft

Java Edition

Go to Singleplayer → Create New World → More World Options
Paste the seed into the Seed for the World Generator field
Text seeds are auto-converted to numbers internally
Entering the numeric value directly gives the same world
Seeds are version-sensitive — terrain changed in 1.18

Bedrock Edition

Go to Play → Create New → Advanced
Enter the seed in the Seed field
Supports signed 64-bit numeric seeds since 1.18.30
Use the copied number, especially when the source is a Java text seed
Terrain may broadly align; structures, local features, caves, and mobs can differ

Seed rules by version

How the seed field behaves in each edition. Source: Minecraft Wiki, Seed (level generation), checked October 2026.

Version	Seed behaviour
Java Beta 1.3	Seed field added. Any signed 64-bit integer is used as is; other text is hashed with String.hashCode() to a signed 32-bit number, so text seeds give only 2^32 possible worlds.
Java 1.18 snapshots	Seeds were briefly limited to 48 bits (Experimental Snapshot 1); 21w41a restored the full 64-bit range.
Java 1.18.2 (22w03a)	Spaces before and after a seed are trimmed, and the seed "0" works like any other number instead of giving a random world.
Pocket Edition 0.1.0	Seeds added as 32-bit values; Legacy Console Edition 1.0.1 used 64-bit seeds.
Bedrock 1.18.0 betas	New random number generator: the same seed number produces different terrain than in 1.17.
Bedrock 1.18.30	Worlds can be created with 64-bit seeds. The same number as Java gives matching terrain and biomes, but structures, decorations, carver caves and mob spawns still differ.

Famous Minecraft seeds

Text seeds are shown with the number Java turns them into. Click Load to inspect one.

Seed	Numeric seed
pack.png Landscape in the old default resource-pack icon (before Alpha 1.2.2); Bedrock's default new-world seed since beta 1.18.20.21	3257840388504953787
Herobrine screenshot World of the original Herobrine screenshot (Alpha 1.0.16_02)	478868574082066804
Java 1.18 panorama Title-screen panorama for Caves & Cliffs Part II	2151901553968352745
thewildupdate Text seed of the Java 1.19 title-screen panorama	-1696067516
18w22a Text seed of the Java 1.13 title-screen panorama	1458140401
Java 1.21.6 panorama Panorama seed shared by Java 1.21.6 and Bedrock 1.21.90	8819392414030687460
North Carolina Text seed of the Java Edition demo world	-343522682
zsjpxah One of the text seeds whose hash is 0	0

Copied!

Quick answer

Java Edition turns a text seed into a number with Java's String.hashCode(), which gives a signed 32-bit integer. Numeric seeds need no conversion between editions: Java 1.18.2+ and Bedrock 1.18.30+ both accept the same signed 64-bit number, so do not add 4294967296 to a negative seed.

Example: The text seed gargamel becomes -1623774494 in Java. Enter -1623774494 in Bedrock 1.18.30+ for broadly matching terrain and biomes, though structures and features can differ.

Type any word or seed number to see its numeric seed, hex and bit pattern, then copy it.

Summary

Enter a Minecraft seed word, phrase, or signed 64-bit number to inspect its numeric value, hexadecimal representation, sign, and bit pattern. Text uses Java String.hashCode; numeric input within the signed-long range is preserved. For modern cross-edition use, enter the same numeric value in Java 1.18.2+ or Bedrock 1.18.30+, but do not expect structures and local features to match.

How it works

Type or paste a seed string or number into the input field.
For string seeds, the tool applies Java's String.hashCode() algorithm to produce a 32-bit signed integer, matching how Minecraft Java Edition converts text seeds.
Spaces before and after the seed are ignored, as Java Edition does since 1.18.2 (snapshot 22w03a).
The numeric seed, its hex equivalent, sign, 32-bit signed and unsigned forms, and bit pattern are displayed immediately.
For modern cross-edition use, copy the numeric result rather than assuming the same text phrase is interpreted identically.
Use the Copy button to grab the numeric seed value for use in-game.

Use cases

Verify what numeric value a word or phrase seed maps to before using it in-game.
Reuse a signed 64-bit numeric seed in modern Java or Bedrock while accounting for edition differences.
Inspect the exact two's-complement hexadecimal and binary representation.
Check whether a "converted" Bedrock seed (one with 4294967296 added or subtracted) is really the same world in your version.
Load famous seeds such as pack.png, the Herobrine screenshot seed and title-screen panoramas in one click.

Frequently Asked Questions

Last updated: 2026-10-09 · Reviewed by Nham Vu