A UUID (Universally Unique Identifier) is a 128-bit identifier guaranteed to be unique. The v4 format is based on random numbers.

Can UUIDs be duplicated?

The probability is nearly zero: you'd need to generate billions of UUIDs to have a chance of collision.

Yes, completely free and unlimited.

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UUID Generator

Generate unique UUID v4 identifiers in one click. Free, no signup.

What is a UUID?: A UUID (Universally Unique Identifier) is a 128-bit identifier guaranteed to be unique. The v4 format is based on random numbers.
Can UUIDs be duplicated?: The probability is nearly zero: you'd need to generate billions of UUIDs to have a chance of collision.
Is it free?: Yes, completely free and unlimited.