geradores.mpelab.dev
Synthetic numbers for forms, not for real life.
Luhn test cards, IBAN-like strings, a fictional person, version 4 UUIDs and a local password generator. Brazilian document generators stay on the Portuguese site.
Tools
Test credit card numbers
Build a primary account number that passes the Luhn check and uses a familiar test prefix. A real gateway still declines it.
IBAN-like test numbers
Pick a country shape, and the page fills the check digits so the rearranged number modulo 97 equals 1. These are not accounts.
Random test person
A name, a birth date, an example.com mailbox, a 555-01 phone and an Example Street address. Built for form fixtures.
UUID generator
Version 4 identifiers from random bits. The version nibble is 4 and the variant nibble is 8, 9, a or b.
Password generator
Choose a length from 8 to 64 and the sets you want. Characters are picked in your browser. The entropy line is log2 of the alphabet, times the length.