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UUID version 7 Generator

Generate time-sortable, RFC 9562 compliant identifiers.
Time (UTC):
UTC Timestamp (milliseconds):

Need to verify a UUID?

Use our UUID v7 Decoder to extract the timestamp and version from any v7 string

Open UUID v7 Decoder

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UUID version 4 Generator
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What is UUID v7?

UUID v7 is a next-generation identifier defined in RFC 9562. Unlike the random UUID v4, it embeds a 48-bit Unix timestamp at the beginning. This makes it time-sortable and highly optimized for database performance while maintaining global uniqueness.

Key Advantages

  • 🚀 Database Efficiency: Sequential IDs prevent B-tree fragmentation, leading to faster writes in PostgreSQL, MySQL, and SQL Server.
  • 📅 Time-Sortable: IDs naturally sort by creation time, eliminating the need for an extra created_at column.
  • 🛡️ Privacy-Safe: Unlike UUID v1, v7 does not leak your machine's MAC address.
  • 🌐 Distributed Friendly: Generate IDs across multiple servers without risk of collision.

How to Use

  1. Select Quantity: Choose how many UUIDs to generate.
  2. Generate: Our server creates standard-compliant IDs using high-precision clocks.
  3. Copy: Use the one-click button to paste them into your project.

UUID v7: 019c38e8-1c86-7d86-b970-a1d2534a6f22 — we have to look at it through the lens of RFC 9562.

This specific ID encodes a precise moment in time: Thursday, August 7, 2025, at 11:34:55.302 AM UTC.

Character Layout

Segment Hex Value Description Technical Details
Timestamp 019c38e8-1c86 Unix Epoch (ms) The first 48 bits. This is the 'sortable' part.
Version 7 UUID Version Fixed at 7. It tells the system this is a v7 ID.
Entropy A d86 Random/Sub-ms 12 bits of random data or high-res timing.
Variant b RFC Variant Usually 8, 9, a, or b. This defines the layout.
Entropy B 970-a1d2534a6f22 Random Fill 62 bits of cryptographically secure randomness.

Frequently Asked Questions

v4 is random and 'explodes' database indexes over time. v7 is sequential, keeping your database fast and your storage compact.

Yes. While it contains a timestamp, the remaining bits are cryptographically random. It is unguessable and safe for public APIs.

No. At ToolGK, UUIDs are generated in-memory, sent to you, and immediately purged. We do not log or store any generated IDs.

UUID v7 contains a timestamp. For security tokens or reset links that must remain anonymous, use instead UUID v4 .
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