ZenovayTools

UUID Generator

Generate UUID v4 identifiers. Create single or bulk UUIDs with one click.

How to Use UUID Generator

  1. 1Click "Generate" to create a new UUID v4 identifier.
  2. 2Set the quantity to generate multiple UUIDs at once.
  3. 3Choose uppercase or lowercase formatting.
  4. 4Click "Copy" to copy the generated UUIDs to your clipboard.
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Frequently Asked Questions

What is a UUID?▾
A UUID (Universally Unique Identifier) is a 128-bit identifier that is practically guaranteed to be unique. UUID v4 uses cryptographically random numbers to ensure uniqueness.
Are these UUIDs truly random?▾
Yes, this tool uses crypto.randomUUID() which provides cryptographically strong random values from your browser.
Is my data secure?▾
Yes, all UUIDs are generated in your browser using the Web Crypto API. No data is sent to any server.
How many UUIDs can I generate at once?▾
You can generate up to 100 UUIDs in a single batch using the bulk generation feature. Each UUID is generated with cryptographically strong randomness.
When should I use UUIDs?▾
UUIDs are ideal for database primary keys, distributed systems where IDs must be unique without coordination, session tokens, file naming, and anywhere you need globally unique identifiers without a central authority.
Can I copy the generated UUIDs?▾
Yes. Click the copy icon next to any individual UUID to copy it, or use the "Copy all" button to copy the entire list at once, with each UUID on its own line.
What is the probability of a UUID collision?▾
UUID v4 has 122 random bits, yielding over 5 undecillion possible values. The probability of generating a duplicate is astronomically small, even when generating billions of UUIDs.