UUID Generator
Bulk-generate v4 UUIDs in seconds
Generate up to 1,000 UUID v4s at once. Lowercase, uppercase, no-dashes, or short formats. Copy all in one click.
a4f4ec88-d10a-486a-af96-9b19e056063d 2c1c45ad-a767-4255-ad1c-1d2906759200 e779a4e5-2e16-4657-a494-36f9f405202e bd4e6304-d743-4066-9847-33477b3eef69 c7c33841-6254-4bff-9e5c-737a3034fa5b eec287ac-d856-4635-b03d-f0bc7dedd960 f551630a-1cda-4253-b41c-6c4ffb93ef2b 2d098d6c-382a-4af3-8df9-93769db52a94 3b1b9731-71ef-491b-b9c8-db21326bfac7 01532191-f2a3-4434-886d-042ade2478b8
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What is an UUID Generator?
A UUID (Universally Unique Identifier) is a 128-bit value that is statistically guaranteed to be unique across space and time. Use them for primary keys, request IDs, idempotency tokens, file names — anywhere you need an identifier that won't collide even when generated independently on different machines.
This generator uses the browser's native `crypto.randomUUID()` API, which produces RFC 4122 version 4 UUIDs from a cryptographically secure random source. Each click generates a fresh batch of up to 1,000 IDs. Choose lowercase (the default), uppercase, no-dashes, or a "short" 8-character format for less-critical use cases.
No API call, no rate limit — pure browser crypto.
Why use this UUID Generator
Built for Indians, by Indians. Every number, every formula, every slab — tuned to FY 2026-27 reality.
Bulk generation
Up to 1,000 UUIDs in a single batch — copy all at once.
4 format variants
Lowercase, uppercase, no-dashes, short 8-char — pick what fits your codebase.
Cryptographically random
Uses crypto.randomUUID — RFC 4122 v4, suitable for security-sensitive use.
One-click copy all
Grab the entire batch as newline-separated text for paste into a script.
Regenerate instantly
Click to refresh — no waiting, no API call.
Zero latency
Runs in your browser — generation is instant even at 1,000 rows.
Using the UUID Generator in 4 steps
No onboarding, no signup. Answer three fields and the numbers update live.
Pick a format
UUID v4 (lowercase) is the standard — pick others if your DB schema requires.
Pick row count
10 for a quick fixture, 1,000 for seeding a test database.
Read the IDs
Newline-separated, monospace, ready to copy.
Copy all
One click puts the whole batch on your clipboard.
Tips to get the most out of it
For database primary keys, use UUID v4 in lowercase — it is the default convention in Postgres, MongoDB, and most ORMs.
For URLs, the no-dash format saves 4 characters per ID — useful when generating shareable links.
For human-facing IDs (e.g. order numbers), the short 8-char format is more readable but has higher collision risk — only safe for small datasets.
Don't use UUID v1 (timestamp-based) where v4 will do — v1 leaks creation time and MAC address; v4 is fully random.
Real-world scenarios
How Indians actually use this generator — concrete inputs, concrete outcomes.
Idempotency keys for payments
Backend dev needs 50 idempotency keys for retry logic in a Razorpay integration. Generates 50 v4 UUIDs, embeds in retry test cases.
Test database seed
Test setup needs unique IDs for 200 fake customer records. UUIDs generated, paired with the API mock generator, dropped into a SQL seed file.
Short share codes
Internal tool generates short share codes for an admin panel. 8-char format, 100 codes — short enough for a URL, low enough volume that collisions are statistically negligible.
Frequently Asked Questions
Still have a question? Our team replies within a business day.
Yes — it is backed by the Web Crypto API's CSPRNG, the same source used for cryptographic key generation. Suitable for session tokens, idempotency keys, etc.
The probability is 1 in 5.3 × 10^36. For all practical purposes, no — collisions never happen.
It is the first segment of a v4 UUID — 32 bits of randomness. Collision probability is meaningful at scale (~50% after 65,000 IDs), so use only for low-volume cases.
Not in this version — only v4. v7 (time-ordered) is gaining adoption but not yet universally supported in browsers.
No — they are generated client-side and never sent to a server. Reload the page and they are gone.
32 hex characters with no separators — e.g. f47ac10b58cc4372a5670e02b2c3d479. Useful for cookie values or filename prefixes.
What people say about the UUID Generator
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