ULID Generator — Unique, Sortable ID Tool
Generate ULIDs (Universally Unique Lexicographically Sortable Identifiers) online. Create 1 to 100 secure, timestamp-encoded ULIDs in your browser, with copy and preview features.
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About ULIDs
ULID stands for Universally Unique Lexicographically Sortable Identifier. It solves limitations of UUIDs by being:
- ✅ Sortable by time
- ✅ Case-insensitive & URL-safe
- ✅ 128-bit entropy: 48-bit timestamp + 80-bit randomness
Use Cases
- 🗃 ID generation in NoSQL/SQL databases
- 📚 Chronological event or log IDs
- ⚙️ Distributed systems & serverless apps
- 🔐 Secure identifiers for APIs and links
- 🧪 Testing and mocking data
ULID Format Explained
| Segment | Details |
|---|---|
Timestamp | First 10 characters encode Unix time in milliseconds (48-bit) |
Randomness | Last 16 characters ensure uniqueness (80-bit) |
Total Length | 26 characters, case-insensitive, Base32-encoded |
Why Use This ULID Tool?
- 🎯 Generate 1–100 ULIDs with a click
- 📋 Copy all ULIDs to clipboard
- 🕒 Show timestamp from ULID for debugging
- 🛡 100% browser-only — your data never leaves your device
- ⚡ Fast, accurate, and developer-friendly
Example Output
01JYH0T9A7K0PK6Z2R8B3MFX14 // Timestamp: 01JYH0T9A7
Frequently Asked Questions (FAQs)
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