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Bulk UUID Generator — Generate Up to 1000 UUIDs & Export

Generate v1, v3, v4, v5, v6, v7 UUIDs · Bulk export · Validate · Inspect · Batch check

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Generate 1 to 1000 UUIDs in a single click and export in 6 formats: plain text, JSON array, CSV, SQL INSERT statements, TypeScript const, or Go slice. Supports all UUID versions. Download directly to file or copy all to clipboard. Perfect for seeding databases, test fixtures, and mock data.

Configuration
UUID Version
🎲 Cryptographically random — most common choice
1
Format Options
Export As
Ctrl + Enter to generate
Output · Generated in 0.12ms 
fc175d22-c7df-4c2d-a373-eefd53e7262e
1 UUIDs36 chars0.04 KB
🎯 Collision Probability (v4) SAFE
< 1 in 10³⁰probability of collision in 1 UUID
UUID v4 has 2¹²² ≈ 5.3 × 10³⁶ possible values. At 1 UUIDs, collision risk is effectively zero.
Ctrl+Enter Generate/RunCtrl+Shift+C Copy OutputCtrl+L ClearCtrl+S DownloadH Toggle History

Frequently Asked Questions

How many UUIDs can I generate at once?

You can generate up to 1000 UUIDs in a single batch using the count slider or quick-select buttons (1, 10, 50, 100, 1000). All 1000 UUIDs are generated in under 50ms in the browser using the Web Crypto API.

What export formats are available for bulk UUIDs?

Six export formats: (1) Plain Text — one UUID per line, (2) JSON Array — ["uuid1","uuid2",...], (3) CSV — with header row, ready for spreadsheet import, (4) SQL INSERT — INSERT INTO items (id) VALUES ('uuid'); for each UUID, (5) TypeScript — const uuids: string[] = [...], (6) Go — uuids := []string{...}.

How do I use bulk UUIDs for database seeding?

Choose SQL INSERT export format, set your desired count, select UUID v7 for better DB performance, and click Generate. Copy or download the SQL file. The output is ready to paste directly into your database migration or seed script. Change "items" table and "id" column names manually to match your schema.

Can I download the generated UUIDs as a file?

Yes — click the "Download" button (or press Ctrl+S). The file is saved with the appropriate extension for the selected format: .txt for plain/SQL/Go, .json for JSON, .csv for CSV, .ts for TypeScript. The filename is uuids.{ext}.

Are bulk-generated UUIDs each unique?

Yes — each UUID is independently generated using a cryptographically secure random number generator. The probability of any two UUIDs in a batch of 1000 being identical is approximately 9.4 × 10⁻²⁶ — effectively impossible. The Collision Probability panel shows the exact Birthday Problem calculation for your batch size.

Can I generate bulk UUIDs for test fixtures?

Yes — for test fixtures in JavaScript/TypeScript, use the TypeScript export format which generates a typed const array ready to import. For Jest or Vitest test factories, you can paste the array directly. For Python test fixtures using pytest or factory_boy, use the plain text format and parse in your fixture setup.