Free Online Bulk UUID Generator
Make technology work smarter for you. Generate many unique identifiers in one go, in the format your system needs, and copy or download the full list, with no account and no cost.
This tool generates version 4 UUIDs only, using your browser’s secure random generator. Version 4 means the identifier is made from random values, not from a time, a name, or a device address, so each one is practically unique. Nothing is uploaded or stored by this page.
How to use this bulk UUID generator
Pick how many you need
Choose 1, 10, 50, or 100 UUIDs from the drop-down. Pick the number that matches the job, whether that is a single test record, a handful of database rows, or a whole batch of sample data. You can always generate again for a new batch.
Choose your format
Pick standard lowercase with dashes, uppercase with dashes, no dashes, or braced with curly brackets around it. Different systems expect different formats, so choose the one your database, code, or form asks for, and the whole batch will match.
Copy or download the list
Click Generate, then copy each UUID with its own Copy button, copy the whole list with Copy All, or download it as a text file with one UUID per line. Paste the list straight into your database, code, or spreadsheet, and you are done.
What is a bulk UUID generator?
A tool that makes many unique IDs at once
A bulk UUID generator creates a whole list of unique identifiers in one click, instead of making you create them one at a time. Each identifier is a long string of letters and numbers that is meant to be unique across systems, so it can label a record, a file, a user, or a transaction without clashing with another one.
What the 8-4-4-4-12 form means
A standard UUID looks like eight characters, a dash, four characters, a dash, four characters, a dash, four characters, a dash, and twelve characters, which is why it is called the 8-4-4-4-12 form. The dashes are only separators to make the string easier to read and copy, and the no-dash format simply removes them, leaving the same 32 characters in one run.
Why version 4 is random
Version 4 UUIDs are built from random values, with 122 bits of randomness once the version and variant markers are set. That amount of randomness is what makes a clash so unlikely in practice that you can generate thousands of them without worrying that two will be the same. This tool makes version 4 only, and it says so plainly.
The problems this tool solves for you
1. “I need lots of test IDs, fast”
Seeding a database, testing an app, or building a demo often needs dozens or hundreds of sample records, and each one needs its own identifier. Typing them by hand is slow and error-prone, and reusing one ID across rows breaks the test. A bulk generator gives you a fresh, unique ID for every row in seconds.
What this means for you
Generate the batch, paste it into your test data, and every row gets a real, unique identifier, just like production data would.
2. “My system needs a specific format”
One system wants lowercase with dashes, another wants uppercase, another wants no dashes at all, and another wants curly brackets around the whole thing. Converting a list by hand is tedious and easy to get wrong. Choosing the format before you generate means the whole batch comes out exactly as your system expects.
What this means for you
Check what your system expects once, pick that format, and paste the batch in without any find-and-replace cleanup.
3. “I keep reusing IDs across records”
Copying the same identifier across records, or making small changes to one ID, can cause silent clashes, where two records look like the same thing to the system. Random version 4 IDs avoid that, because each one is generated fresh from random values, with no pattern linking it to the others.
What this means for you
Generate a fresh batch for each set of records, and never edit one UUID by hand to make another one.
4. “I need IDs without setting up code”
Writing a small script to generate IDs is fine for a developer, but it is a barrier for a tester, a student, a product manager, or anyone who just needs a list right now. A browser tool removes that setup step entirely, with no code, no install, and no account standing between you and the list.
What this means for you
Open the page, pick a count and a format, and you have the list in seconds, ready to paste wherever it is needed.
5. “I do not want to pay or sign up just for IDs”
Many ID tools ask for an account or a paid plan before they show a batch, which feels unnecessary for something as simple as a random string. This tool does not. You pick your options, you get your list, and nothing is uploaded or stored, because everything happens in your browser.
What this means for you
Use the tool as many times as you like, for as many batches as you need, without any cost or signup.
Who uses a bulk UUID generator?
Developers
Developers use it for database keys, API test data, and sample records, where each row, request, or object needs a unique identifier that will not clash with real data.
Testers and QA teams
Testers use it to build realistic test sets, to check that a system handles unique IDs correctly, and to reproduce a bug with a fresh set of identifiers instead of reused ones.
Database admins
Database staff use it when they seed tables, migrate records, or create placeholder rows, where a batch of valid IDs saves a script and keeps the data tidy.
Students learning databases
Students use it in database and programming courses, where they need sample IDs for exercises, projects, and practice tables, without writing generator code first.
Product managers and analysts
Product and data staff use it for mock data, spreadsheets, and demo datasets, where each fake record still needs a believable, unique identifier to look and behave like real data.
Game and app builders
Builders use it for items, sessions, saves, and test accounts, where a unique ID per object keeps the game or app from mixing up one player’s data with another’s.
Tips to use UUIDs well
Match the format your system expects
Before you generate, check whether your system wants dashes, no dashes, uppercase, or braces. Generating in the right format first saves a cleanup pass later, and it avoids pasting a format that your system quietly rejects.
Use one batch per dataset
Generate a fresh batch for each dataset, table, or test run, rather than reusing a batch across projects. That keeps your test data separate and makes it clear which IDs belong to which set.
Do not use UUIDs as passwords
A UUID is an identifier, not a secret. It is designed to label something, not to protect it, and it often appears in logs, links, and databases. Use a proper password generator for anything that needs to stay secret.
Keep the dashes unless told otherwise
The standard form with dashes is the most widely recognised, and most tools accept it by default. Only switch to no dashes or braces when your system, code, or form specifically asks for that format.
Store IDs exactly as generated
Copy and paste UUIDs rather than retyping them, because a single wrong letter breaks the match. If you must type one, read it back character by character, and check the dashes are in the right places.
Remember this tool makes version 4 only
This tool generates version 4 UUIDs, which are random. It does not make time-based, name-based, or other versions, so if your project specifically needs another version, you will need a different tool that implements it.
Common mistakes to avoid
Editing a UUID to make a new one
Changing a letter or two in an existing UUID feels quick, but it can create a clash, a badly formed ID, or a version marker that no longer matches version 4. It also makes it hard to tell which IDs were properly generated.
What this means for you
Always generate a fresh UUID instead of editing an old one, even when you only need one more.
Using the same ID for different records
Reusing one identifier across records defeats the whole purpose of a unique ID, and it can cause records to overwrite each other, merge in reports, or fail validation. Each record needs its own ID, full stop.
What this means for you
If two rows share an ID by accident, regenerate one of them and update every place that references it.
Confusing a UUID with a GUID
UUID and GUID are often used for the same kind of identifier, and in practice a GUID is usually a UUID in braced format, as used in some Microsoft systems. The braced option in this tool covers that common case, but always check what your specific system expects.
What this means for you
If a form asks for a GUID, try the braced format first, and check the example it shows before you paste a whole batch.
Bulk UUID generator vs. making IDs yourself
Using this tool
You get many fresh, random version 4 UUIDs in seconds, in the format you chose, with Copy All and a text download. Nothing is stored, and you can generate again as often as you like.
Making them by hand
Making IDs by hand, by typing random letters or editing one ID into another, is slow and risky. Handmade IDs can clash, break the format, or lose the version markers, and a system may reject them without a clear error.
Writing a generator script
A script is the right choice for generating IDs inside an app automatically, but it is overkill when you just need a list for a test, a demo, or a spreadsheet. A browser tool gives you that list now, without writing or running any code.
Frequently asked questions
Is this bulk UUID generator free?
Yes. It is completely free, with no signup, no fee, and no download needed beyond the text file you choose to save.
How do I generate multiple UUIDs at once?
Choose how many you need, pick a format, and click Generate UUIDs. You will get a fresh list right away, each with its own Copy button.
How many UUIDs can I generate in one batch?
You can generate 1, 10, 50, or 100 UUIDs at a time. If you need more, click Generate again for a new batch.
What is a UUID, in plain words?
A UUID is a long, unique label made of letters and numbers, used to identify one record, file, user, or transaction so it is not confused with any other. Think of it as a serial number that is practically unique across all systems.
What does the 8-4-4-4-12 form mean?
It describes the standard layout: eight characters, then four, then four, then four, then twelve, with dashes between each group. The no-dash format keeps the same 32 characters but removes the dashes.
Which version does this tool generate?
Version 4 only. Version 4 UUIDs are made from random values, with 122 bits of randomness, and they are not based on a time, a name, or a device address. This tool does not claim to make other versions.
Can I download all the UUIDs as a file?
Yes. Click Download .txt after generating, and you will get a plain text file with one UUID per line, ready to paste into a database, a script, or a spreadsheet.
Are my generated UUIDs stored anywhere?
No. The UUIDs are created in your browser and are not sent to a server, saved, or shared. Once you leave the page, the list is gone.
Conclusion
Unique identifiers should be easy to get right. Pick how many you need above, choose the format your system expects, and generate a fresh batch of version 4 UUIDs in seconds. Copy them one by one, copy them all, or download them as a text file, and paste them straight into your database, code, or test data. Never edit one UUID to make another, never reuse one across records, and remember that a UUID labels something, it does not keep it secret. With that habit, your test data, demos, and sample records will behave just like real data, without clashes or cleanup.