🔮

UUID / GUID Generator & Inspection Studio

Generate cryptographically secure Universal Unique Identifiers (UUID / GUID) with our UUID Generator & Inspector! Powered by standard `crypto.getRandomValues()` entropy, our tool generates bulk UUID v4 (random), UUID v1 (time-based), uppercase/lowercase strings, braces, hyphens, and custom batch exports for database keys.

✨ NLP PROMPT ENGINEType your generation or validation query in plain English (e.g. "Create 15 v1 UUIDs")
⚡
Or try prompts:
32-Digit Hex Engine (RFC 4122 Compliant)
V4Random High Entropy
V1Date-time / MAC
V5SHA-1 Deterministic
V3MD5 Deterministic

🎯 Result

d7c8837c-d035-4542-b684-1bb2fb627ba2

📖 UUID Version Guide: When to use which?

v1Time-based

Logic: Date-time and MAC address

Primary Use: Time-ordered sequences

v2DCE Security

Logic: Date-time and POSIX UID/GID

Primary Use: Legacy system security

v3Deterministic

Logic: Namespace and name (MD5)

Primary Use: Repeatable IDs (Fast)

v4Randomness

Logic: Random high-entropy number

Primary Use: Default / General IDs

v5Deterministic

Logic: Namespace and name (SHA-1)

Primary Use: Repeatable IDs (Secure)

📊 Deterministic Namespace References (V3 & V5 Combinations)

VersionNamespace TypeName Input StringDeterministic UUID Output (Copyable)
V3 DNSexample.com 9073926b-929f-31c2-abc9-fad77ae3e8eb
V5 DNSexample.com cfbff0d1-9375-5685-968c-48ce8b15ae17
V3 DNSnextools-tool cd4802b9-3f6a-322c-8884-f12e205892c4
V5 DNSnextools-tool ec90bdfe-6389-5dfc-b36e-377b1f3205a2
V3 URLexample.com a0473a67-27a1-3c05-a2d1-5c134639347f
V5 URLexample.com a5cf6e8e-4cfa-5f31-a804-6de6d1245e26
V3 URLnextools-tool c019e5df-ac11-3e99-82c1-96cf6fddebde
V5 URLnextools-tool 97508cb3-dbf4-5991-9ca8-79c6712134f6
V3 OIDexample.com 109f8204-164d-33ef-871d-d92c373e8c66
V5 OIDexample.com eb6106fd-8a37-5395-b3f7-7cb93195fdba
V3 OIDnextools-tool a60de2fb-44e0-3ee5-986f-6acff1d867c7
V5 OIDnextools-tool 3fc4c444-4034-5d19-b215-eb0ea2207374
V3 X500example.com 11c2f001-e3a4-3ad0-90f7-88ac418c36b8
V5 X500example.com f014ed3c-177a-541e-a840-fc330670f8e8
V3 X500nextools-tool 284af703-9be2-3cb1-b522-e3bf57517a49

Overview & Capabilities

Generate cryptographically secure Universal Unique Identifiers (UUID / GUID) with our UUID Generator & Inspector! Powered by standard crypto.getRandomValues() entropy, our tool generates bulk UUID v4 (random), UUID v1 (time-based), uppercase/lowercase strings, braces, hyphens, and custom batch exports for database keys.

Tutorial

How to Use

01
Select your UUID Version: UUID v4 (Cryptographic Random) or UUID v1 (Time-based).
02
Choose formatting options: Uppercase vs Lowercase, with Hyphens vs Compact (no hyphens), or Braces {...}.
03
Select the quantity of UUIDs to generate (1 up to 1,000 in bulk).
04
Click 'Generate UUIDs' to create fresh identifiers instantly.
05
Copy all generated UUIDs to your clipboard or download as a TXT file.
Capabilities

Key Features

Cryptographically Secure RNG: Uses browser Web Crypto API entropy pools ensuring zero collision probability.
Bulk Identifier Generator: Generate up to 1,000 unique UUIDs simultaneously in a single click.
Flexible Output Formats: Standard 8-4-4-4-12 hyphenated, raw 32-character hex, GUID {...}, or SQL array format.
UUID Inspector & Version Validator: Paste any existing UUID to inspect its version, variant, and embedded timestamps.
100% Client-Side Generation: Identifiers are created locally on your machine with zero server communication.
Applications

Common Use Cases

Database Primary Keys: Provision secure, non-sequential primary key identifiers across distributed databases.
Session Identifiers: Formulate unguessable session tokens for client validation.
Deterministic Assets: Create identical, reproducible UUID hashes for domain names, URLs, or OIDs.
Metadata Timestamp Extraction: Decrypt and extract precise creation time coordinates from legacy V1 UUIDs.
Guidance

Tips & Best Practices

💡
For default and general-purpose database identifiers, favor V4 (Random) UUIDs to minimize collisions.
💡
When creating unique IDs for external assets (URLs, DNS, OIDs) that must remain reproducible, select V5 (SHA-1 Secure).
💡
Always test custom namespaces in lower-case hyphenated forms to maintain standards compatibility.
Ecosystem

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Answers

Frequently Asked Questions

Q What is a UUID v4 and what is the probability of a duplicate collision?

A UUID v4 is a 128-bit identifier with 122 bits of random entropy (3.4 × 10³⁸ possible combinations). The probability of generating a duplicate UUID v4 is so infinitesimally small (roughly 1 in a billion billion) that collisions are practically impossible in software development.

Q How does a UUID contrast with a Microsoft GUID?

UUID (Universally Unique Identifier) is the standard IETF term, while GUID (Globally Unique Identifier) is Microsoft's terminology for the exact same 128-bit RFC 4122 specification.

Q What does the 8-4-4-4-12 hexadecimal structure represent?

The 36-character string (e.g. `123e4567-e89b-12d3-a456-426614174000`) encodes 32 hexadecimal digits separated by 4 hyphens, with specific positions reserved for version (e.g. `4`) and variant.