UUID v4 Generator

Created on 9 November, 2025 • Generator Tools • 0 views

Generate RFC-4122 UUID v4 identifiers—globally unique, 128-bit, and ready for databases, events, and APIs.

What It Is

Creates random-based UUIDs like 550e8400-e29b-41d4-a716-446655440000.

Why It Matters

Collision-resistant IDs simplify distributed systems without central coordination.

How to Use It Well

Steps

1. Click generate for v4 UUIDs.
2. Copy as lowercase with hyphens.
3. Store as text or 16-byte binary.

Tips

1. Index efficiently if used as primary keys.
2. Avoid sequential patterns for privacy.
3. Validate format before acceptance.