Free Online UUID Generator - No Signup Required
Generate unique UUIDs (v1 and v4) instantly. Create single or bulk UUIDs with multiple format options. 100% free - no registration needed.
Generator Options
Random UUIDs using cryptographically secure random numbers
Generate between 1 and 100 UUIDs at once
Generated UUIDs
Generated UUIDs will appear here...
Features
UUID v4 (Random)
Cryptographically secure random UUIDs
UUID v1 (Timestamp)
Time-based UUIDs with unique node ID
No Registration
100% free - no signup or account required
Bulk Generation
Generate up to 100 UUIDs at once
Multiple Formats
Standard, no hyphens, uppercase, or with braces
Instant Copy
One-click copy and download functionality
Best Free Online UUID Generator - No Signup Required
Welcome to the most comprehensive UUID generator available online - completely free with no signup required. Generate universally unique identifiers (UUIDs) instantly with support for v1 (timestamp) and v4 (random) versions.
What is a UUID?
A UUID (Universally Unique Identifier), also known as GUID (Globally Unique Identifier), is a 128-bit identifier that is guaranteed to be unique across all space and time. UUIDs are defined by RFC 4122 and used in databases, distributed systems, and applications where unique identification is required without central coordination.
UUID Versions Explained
🎲 UUID v4 (Random)
UUID v4 is generated using cryptographically secure random numbers. With 122 random bits, the probability of generating duplicate UUIDs is astronomically low (about 1 in 2.71 quintillion). This is the most commonly used UUID version.
⏰ UUID v1 (Timestamp)
UUID v1 incorporates the current timestamp and a unique node identifier. This makes v1 UUIDs sortable by creation time, which can be useful for database indexing. However, they may expose information about when and where they were created.
✅ No Registration Required
Unlike other UUID generator tools, we don't require any signup, registration, or account creation. Simply select your options and generate UUIDs instantly. 100% free forever.
🔒 Privacy-First
All UUID generation happens locally in your browser using the Web Crypto API. We don't store, transmit, or access your generated UUIDs.
How to Use Our UUID Generator
Select UUID Version
Choose between UUID v4 (random) or UUID v1 (timestamp-based)
Choose Format & Count
Select output format and number of UUIDs to generate (1-100)
Generate & Export
Click Generate, then copy individual UUIDs or download all
UUID Format Options
- •Standard: 550e8400-e29b-41d4-a716-446655440000
- •No Hyphens: 550e8400e29b41d4a716446655440000
- •Uppercase: 550E8400-E29B-41D4-A716-446655440000
- •With Braces: {550e8400-e29b-41d4-a716-446655440000}
Frequently Asked Questions (FAQ)
Is this UUID generator free?
Yes, our UUID generator is completely free with no signup required. All features are available without any limitations.
What is the difference between UUID v1 and v4?
UUID v1 is time-based and includes a timestamp and node ID. UUID v4 is randomly generated using cryptographically secure random numbers.
Are the generated UUIDs unique?
Yes, UUIDs are designed to be universally unique. UUID v4 uses 122 random bits, making collisions statistically improbable.
Can I generate multiple UUIDs at once?
Yes, you can generate up to 100 UUIDs at once using our bulk generation feature.
Professional UUID Generation for Developers
Whether you're building databases, distributed systems, or need unique identifiers for your application, our UUID generator provides the tools you need. Perfect for developers, testers, and anyone needing unique identifiers. No registration required - just instant UUID generation.
Try our free UUID generator today - the fastest way to generate unique identifiers online.