About UUID Generator – v4, v7, GUID & Bulk UUID Generator
Navorika UUID Generator creates UUID v4 and UUID v7 identifiers directly in your browser, with bulk generation, GUID-compatible formatting, casing controls, and downloadable output.
Input is processed locally in your browser and is not sent to Navorika.
How the calculation works
UUID v4
UUID version 4 uses random data with the UUID version field set to 4 and the RFC variant bits set to the standard 10 pattern.
UUID v7
UUID version 7 stores the Unix timestamp in milliseconds in the most significant 48 bits, sets the version field to 7, and fills the remaining available bits with random data.
How to use this tool
- 1Choose UUID v4 or UUID v7.
- 2Enter the number of identifiers to generate, from 1 to 1,000.
- 3Choose standard, compact, or brace formatting and lowercase or uppercase output.
- 4Generate the UUIDs, then copy individual values, copy all, or download TXT or CSV output.
Understanding the result
UUID v4 is appropriate when you need randomly generated identifiers without embedded time ordering.
UUID v7 is useful when time-sortable identifiers can improve ordering and database index locality.
GUID is commonly used as another name for UUID-compatible identifiers, especially in Microsoft ecosystems.
Important limitations
- UUID uniqueness is probabilistic rather than mathematically guaranteed across every possible system.
- UUID v7 contains a millisecond timestamp and therefore reveals approximate creation time.
- Formatting options such as uppercase, braces, or removing hyphens change presentation but do not create a different UUID version.
- Bulk generation is intentionally limited to 1,000 UUIDs per batch to keep the browser interface responsive.
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Frequently asked questions
What is the difference between UUID v4 and UUID v7?
UUID v4 is primarily random, while UUID v7 includes a Unix timestamp in milliseconds in its leading bits and is designed to sort naturally by generation time.
Is a GUID the same as a UUID?
GUID and UUID usually refer to the same 128-bit identifier format in practical software development, although GUID is terminology commonly associated with Microsoft platforms.
Can I generate UUIDs in bulk?
Yes. Navorika can generate up to 1,000 UUIDs in a single batch and lets you copy or download the results.
Are generated UUIDs sent to Navorika?
No. Generation runs locally in your browser using the Web Crypto API.
Does UUID v7 reveal when it was created?
Yes. UUID v7 includes a Unix timestamp measured in milliseconds, so its approximate creation time can be derived from the identifier.
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