Codes and Test Data
Random Serial Number Generator
Generate serial numbers with your own prefix, length and character set, all unique in the batch.
Random Serial Number Generator
4 groups of 4
How many serials
Format
Generate serial numbers
This tool builds random serial numbers and product keys in a grouped format. Set how many groups and how many characters per group, choose letters, digits or both, and generate one serial or a batch. The groups are joined with dashes, the familiar key style.
Readable by design
The letter set leaves out characters that are easy to confuse, so you will not see a capital I next to a 1 or an O next to a 0. That keeps serials easy to read aloud and to type from a label without mistakes.
Uses and privacy
Serials suit test data, licence keys, asset tags and sample product codes. Every character is drawn from the browser cryptographic random source, and nothing leaves your device.
Popular generators
Frequently asked questions
Can I set the format
Yes. Choose the number of groups and characters per group, so 4 by 4 gives a key like AAAA-BBBB-CCCC-DDDD, and other shapes are a click away.
Can I use digits only or letters only
Yes. Switch between letters and digits, letters only, or digits only to match the style you need.
Are confusing characters removed
Yes. The letters exclude I and O so serials are not misread as 1 or 0.
Are they unique
Each serial is generated independently at random. For a small batch repeats are very unlikely, though not impossible.
Is it free
Yes, free and with no sign up.
Related generators
- Random PIN Code Generator
- Random OTP Code Generator
- Random Serial Number Generator
- Random Invoice Number Generator
- Random Account Number Generator
- Random IBAN Generator
- Fake Credit Card Number Generator
- Random IMEI Number Generator
- Random VIN Number Generator
- Random ISBN Generator
- Random Barcode Number Generator
- Random Zip Code Generator
- Random Phone Number Generator
- Random IP Address Generator
- Random Lock Combination Generator
For invoice references use the invoice number generator, or a product barcode with the barcode number generator.