ULID Generator
Generate ULIDs — sortable, unique, Crockford Base32
🔒 Files never leave your browser
1 - 100
Generated ULIDs 0 ULIDs
ULID Breakdown
Full ULID
Timestamp (ms)
Date/Time (UTC)
Randomness
Format: 10 chars timestamp (48-bit, ms precision) + 16 chars randomness (80-bit) = 26 chars total, Crockford Base32 encoded.
How to Use ULID Generator
Generate
Click generate for a new ULID.
Bulk
Generate up to 100 ULIDs at once.
Copy
Copy single or all ULIDs.
Why Choose AllTools ULID Generator?
- ✓ 100% free, no account needed
- ✓ Crockford Base32
- ✓ Timestamp component
- ✓ Bulk generation
- ✓ Copy button
- ✓ No data stored or transmitted
Why Use This Tool
- ★ No data leaves your browser — safe for proprietary code and sensitive data
- ★ Instant processing with zero server latency
- ★ No account or API key required
- ★ Works offline after initial page load
- ★ Supports latest syntax standards and specifications
Related Resources
Frequently Asked Questions
What is a ULID? ▼
Universally Unique Lexicographically Sortable Identifier — like UUID but sortable by creation time.
Is there a file size limit? ▼
No strict limit. Processing happens in your browser, so capacity depends on your device memory. Most files work smoothly.
Which browsers are supported? ▼
All modern browsers including Chrome, Firefox, Safari, Edge, and Opera on both desktop and mobile.
Can I use this offline? ▼
Yes. Once the page is loaded, the tool works without an internet connection since all processing is local.
Is my data secure? ▼
Yes. Your data never leaves your browser. Nothing is stored on or transmitted to any server.
Does this work on mobile? ▼
Yes. All AllTools tools are fully responsive and work on phones and tablets.
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