UULD Generator
Our tool is an online UUID Generator that helps you create unique identifiers quickly. You can generate single or bulk UUIDs, choose from multiple versions, and apply formats or encoding as needed. This UUID generator is useful for APIs, databases, testing, and application development where unique values are required.
Output
Our tool is a reliable online UUID Generator built for developers and technical users who need unique identifiers without manual effort. It allows you to generate UUIDs in bulk, select specific UUID versions, and apply formatting or encoding based on your use case. This Random UUID generator supports commonly used versions such as v4 for random identifiers and v7 for time-ordered values, along with other available versions.
You can control how the output appears by choosing options like hyphens, uppercase letters, quotes, or comma-separated values. Encoding options such as Base64 or URL encoding help when UUIDs are used in APIs or request parameters.
Our tool works directly in the browser and produces output that can be copied and used immediately in databases, applications, test data, or scripts.
Features of the UUID Generator
Our tool offers practical features that help generate and manage unique identifiers for different technical needs. This Online UUID Generator is built to support common development, testing, and data workflows without extra steps.
- Bulk UUID generation (1–1000): Generate a single UUID or up to 1000 values in one action using our UUID generator.
- Multiple UUID versions supported: Create UUIDs using v1, v3, v4, v5, v6, v7, or v8 based on your requirements.
- Flexible output formats: Choose how UUIDs appear, including hyphens, braces, uppercase letters, quotes, or comma-separated values.
- Encoding options available: Apply Base64, RFC 7515, or URL encoding when UUIDs are required for APIs or request parameters.
- Copy-ready output: Generated UUIDs can be copied directly and used in code, databases, or data files.
- Browser-based generation: Our tool works online without installation or account creation.
How to Use the UUID Generator
Using our UUID generator online does not require installation, sign-up, or configuration. The generator works directly in your browser and provides results instantly.
- Set the number of UUIDs Start by entering how many UUIDs you want to generate. You can create a single value or generate up to 1000 UUIDs in one request. This is helpful when preparing data for testing, imports, or batch processing.
- Choose a UUID version: Select the UUID version based on your use case. For example, v4 is commonly used for random identifiers, while v7 is useful when ordered values are required.
- Select the output format: Adjust how the UUIDs are displayed. Options include hyphens, uppercase letters, quotes, or comma-separated output. These settings help match the format required by your code, database, or file.
- Apply encoding if needed: Choose Base64, RFC 7515, or URL encoding when UUIDs must be included in URLs or API requests.
- Generate and copy: Click the generate button to receive the output. The UUID generator displays results immediately, ready to copy and use.
UUID Types
Our UUID Generator supports multiple UUID versions to match different technical requirements. Each version follows a specific structure and serves a different purpose.
UUID Version 4 (Random)
UUID v4 is generated using random values. It is commonly used for general identifiers where ordering is not required. This version is widely supported across programming languages, databases, and platforms.
Common uses:
- API request IDs
- Session identifiers
- Public-facing identifiers
UUID Version 7 (Time-Ordered)
UUID v7 includes a timestamp component, which allows generated values to follow a logical order based on creation time. This version is often chosen when ordered records or index-friendly identifiers are needed.
Common uses:
- Database primary keys
- Event records
- Log entries
UUID Version 1 and Version 6 (Time-Based)
UUID v1 and v6 are time-based versions. They use time information as part of the identifier. Depending on implementation, these versions may include system-related data.
Common uses:
- Internal systems
- Legacy implementations
UUID Version 2 (DCE Security)
UUID v2 is based on UUID v1 but replaces part of the timestamp with a local identifier, such as a user ID or group ID. This version also includes a local domain value. UUID v2 is mainly used in DCE-based environments and older systems that require this structure.
Common uses:
- DCE-style systems
- Security-related identifiers
- Legacy environments requiring local identifiers
UUID Version 3 and Version 5 (Name-Based)
UUID v3 and v5 generate deterministic values using a namespace and a name. The same input always produces the same UUID, which is useful when consistency is required.
Common uses:
- Stable identifiers
- Resource mapping
UUID Version 8 (Custom)
UUID v8 allows custom structures defined by application rules. This version is intended for advanced use cases where a specific layout is required.
UUID Version Comparison
Different UUID versions serve different technical needs. The table below compares supported versions based on how they are generated, whether they follow time order, and where they are commonly used. This comparison helps you select the right option when using the UUID Generator.
UUID Version | Generation Method | Time-Ordered | Deterministic | Common Use Cases |
v1 | Time-based | Yes | No | Internal systems, legacy setups |
v2 | DCE security (v1-based with local ID) | Yes | No | DCE-style systems, security-related identifiers |
v3 | Name-based | No | Yes | Stable identifiers from fixed input |
v4 | Random | No | No | APIs, sessions, general identifiers |
v5 | Name-based | No | Yes | Consistent resource identifiers |
v6 | Time-based | Yes | No | Ordered records, internal data |
v7 | Timestamp-based | Yes | No | Databases, logs, event records |
For most use cases, UUID v4 is suitable when ordering is not required. UUID v7 is a better choice when identifiers need to follow creation order, such as in databases or logs.
How to Identify the UUID Version
All UUIDs follow the same standard format, but each version can be identified by a specific character inside the value. When a UUID is generated using a UUID Generator, the version number is embedded directly in the identifier itself.
In a standard UUID format (8-4-4-4-12), the first character of the third group indicates the UUID version. By checking this position, you can determine which version was used to generate the UUID.
UUID Version Identification
UUID Version | How the Version Is Identified | What to Look For in the Value |
v1 | Version number in the UUID | The first digit of the third group is 1 |
v2 | Version number in the UUID | The first digit of the third group is 2 |
v3 | Version number in the UUID | The first digit of the third group is 3 |
v4 | Version number in the UUID | The first digit of the third group is 4 |
v5 | Version number in the UUID | The first digit of the third group is 5 |
v6 | Version number in the UUID | The first digit of the third group is 6 |
v7 | Version number in the UUID | The first digit of the third group is 7 |
f47ac10b-58cc-4372-a567-0e02b2c3d479
^
UUID version 4
By checking this position, you can quickly confirm which version was used, regardless of where the UUID appears in your application, database, or logs.
Why Use This UUID Generator
Our UUID Generator is built to support common technical workflows where reliable and valid identifiers are required. It focuses on control, clarity, and output that can be used immediately without extra steps.
- Supports multiple UUID versions: Generate UUIDs using v1 through v8, including v4 and v7, so you can choose the version that fits your specific requirement. Also works as an UUID v4 generator too.
- Bulk generation with control: Create up to 1000 UUIDs at once, which is useful for test data, imports, and batch operations.
- Flexible formatting options: Adjust output to match JSON, SQL, CSV, or code formats using built-in format settings.
- Encoding options included: Apply Base64, RFC 7515, or URL encoding when UUIDs are required in request parameters or encoded payloads.
- Instant, copy-ready output: Generated values are available immediately and can be copied directly into applications or data files.
- Works directly in the browser: No installation, registration, or configuration is required to use the UUID generator.
Benefits of Using UUIDs
UUIDs are widely used across applications and systems where unique identifiers are required. Using UUIDs helps reduce conflicts and supports scalable system design.
- Low risk of duplicate values: UUIDs are generated using large value ranges, which makes duplicates extremely unlikely when using a UUID generator.
- No central coordination required: UUIDs can be created independently across different services without relying on a shared counter or database.
- Suitable for distributed systems: UUIDs work well in environments where multiple systems generate identifiers at the same time.
- Safer than sequential IDs: UUIDs do not expose record counts or ordering, which helps prevent easy guessing of identifiers.
- Compatible with databases and APIs: UUIDs can be used as primary keys, request IDs, or resource identifiers in SQL, NoSQL, and API-based systems.
- Supports different technical needs: With multiple UUID versions available, you can choose random, time-ordered, or name-based identifiers depending on your use case.
Frequently Asked Questions
What is a UUID Generator?
A UUID Generator is a utility that creates unique identifiers following a standardized structure. These identifiers are commonly used in software systems, databases, and APIs.
What does UUID stand for?
UUID stands for Universally Unique Identifier. It is a 128-bit value designed to be unique across systems and time.
What is the difference between UUID v4 and v7?
UUID v4 is generated using random values. UUID v7 includes a timestamp component, which makes the output follow creation order and work better for ordered records.
How many UUIDs can I generate at once?
You can generate up to 1000 UUIDs in a single request using the UUID generator
Can I use these UUIDs in databases and APIs?
Yes. UUIDs generated using the UUID Generator can be used as primary keys, request identifiers, and resource IDs in databases and APIs.
Do I need to install anything to use the UUID Generator?
No. The UUID generator works directly in the browser and does not require installation or registration.