Free Minecraft browser tool

Minecraft UUID Converter

Convert dashed, undashed, signed-int-array, and offline Minecraft UUID formats, with optional online username lookup.

Quick answer

How the UUID Converter Works

Paste a UUID in either common format or enter usernames for online lookup. All binary conversions and offline UUID generation run locally.

Dashed and undashed conversion
Four signed 32-bit NBT integers
Case-sensitive offline UUID algorithm
Batch username lookup with graceful errors

How to Use the Minecraft UUID Converter

Choose UUID conversion, online username lookup, or offline UUID mode.
Enter a valid value or up to ten comma-separated usernames.
Copy the dashed, undashed, or signed-int-array representation you need.

Important Minecraft Mechanics

The four-integer form splits the same 128 bits into signed two’s-complement 32-bit values.

Offline servers derive a version-3 MD5 UUID from the exact case-sensitive text OfflinePlayer:name.

Edition and Version Notes

Java account and command formats. Use the version selector when the tool provides one. GamerCubic does not label Java-only data or commands as Bedrock-compatible.

Calculations, uploaded files, generated plans, and normal exports are processed locally unless a control clearly requests an online username or profile lookup.

Method and evidence

What the UUID Converter Verifies

This evidence summary separates the uuid converter result from automated checks and real Minecraft testing.

Output: Converted formatThe uuid converter result is produced from the settings and inputs entered in this browser tool.
Automated checks: Conversion paths checkedUUID Converter parsing, normalization, and output-format paths have automated regression coverage.
In-game testing: Creator-claimedGamerCubic reports an in-game check of this uuid converter workflow; no public test log is attached.
Published scope: Java account and command formatsUUID Converter checks do not certify every Minecraft release, server implementation, mod, data pack, or gameplay situation.

UUID Converter FAQs

Does changing username capitalization affect offline UUIDs?

Yes. The offline algorithm is case-sensitive, so Steve and steve produce different values.

Why can online lookup fail while conversion works?

Lookup depends on Mojang-compatible network availability. Local format conversion does not.

Evidence states are intentionally conservative. Automated software checks and in-game verification are reported separately.