UUID Generator
완전 랜덤 (가장 일반적)
1개 생성됨
07eeba5a-1413-464b-803f-96d678833252 Last updated: 2026 · Free online tool
What is UUID Generator?
Free online tool to generate UUID v1/v4/v7 with bulk generation and validation
How to Use
- 1 Select Version — Choose the UUID version (v1, v4, v7).
- 2 Set Options — Configure uppercase and hyphen options.
- 3 Generate — Enter the number to generate and click the 'Generate' button.
- 4 Copy & Validate — Use the copy button for each UUID or the copy all button, and validate existing UUIDs at the bottom.
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Frequently Asked Questions
v1 is based on timestamp+MAC, v4 is fully random, and v7 is timestamp+random (sortable). v7 is the latest standard (RFC 9562) and ideal for DB indexing.
You can bulk generate up to 1,000 UUIDs at a time.
For v4, with 122 random bits, you would need to generate approximately 2.7 x 10^18 UUIDs to reach a 50% collision probability. It is practically zero.
For v7 UUIDs, the upper 48 bits contain a Unix timestamp, so the creation time can be extracted. This is available in the validation feature.
No. UUIDs are generated directly in the browser using crypto.getRandomValues().