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About Random UUID Generator
The Bulk UUID / GUID Generator creates cryptographically secure UUID Version 4 (Random), Version 7 (Unix Epoch Time-Ordered), and Version 1 (Timestamp) identifiers with uppercase, lowercase, hyphens, and braces formatting options.
How to Use Random UUID Generator
Step 1
Select UUID version (UUIDv4 Random or UUIDv7 Time-Ordered).
Step 2
Configure formatting (Hyphens, Letter Case, Braces).
Step 3
Set quantity and click "Generate UUIDs".
Step 4
Click "Copy All UUIDs".
Practical Use Cases for Random UUID Generator
Database Primary Key Generation & Distributed IDs
Generate bulk time-ordered UUIDv7 identifiers for high-performance PostgreSQL/MySQL B-tree indexing without page fragmentation.
API Request Tracing & Correlation ID Generation
Create standard RFC 4122 UUIDv4 identifiers for microservice distributed tracing headers (`X-Correlation-ID`).
Input & Output Examples
Generating 3 Time-Sorted UUID Version 7 Identifiers
Version: `UUIDv7 (Time-Ordered)`, Count: `3`, Case: `Lowercase`
UUIDs: `018e24fa-9a14-7bc3-9041-8c4d5e6f7a8b`, `018e24fa-9a15-7ce4-9122-9d5e6f7a8b9c`, `018e24fa-9a16-7df5-9233-0e6f7a8b9c0d`
Key Features & Performance
- ✓UUID Version Support: UUIDv4 (122-bit Random) and UUIDv7 (Unix Timestamp + Random, RFC 9562).
- ✓Format Toggles: Standard Hyphenated, No Hyphens, Uppercase, Lowercase, and GUID Braces (`{...}`).
- ✓Bulk Generation: produce up to 5,000 UUIDs instantly in JSON, CSV, SQL `INSERT`, or plaintext.
- ✓100% Client-Side memory execution.
- ✓1-Click Copy all generated UUIDs.
Key Terminology & Definitions
UUIDv7 (RFC 9562)
A modern UUID format combining a 48-bit millisecond Unix timestamp with 74 bits of cryptographic entropy, creating sortable identifiers ideal for database indexing.
UUIDv4 (RFC 4122)
A universally unique identifier generated using 122 bits of pseudorandom data, with a collision probability so low it is practically zero.