Stop hunting for regular expressions: pick one of 30 tested patterns for emails, phone numbers, PIN and ZIP codes, PAN, Aadhaar, GSTIN, IFSC, dates, colours and more. Each comes with a plain explanation and a live tester.
loading toolHow to use a ready-made regex
- Pick a pattern from the list.
- Read what it checks; examples that pass and fail are filled in.
- Type your own values to test, then copy the pattern.
Good to know
- Patterns starting “Find:” pull every match out of a block of text instead of checking one value.
- Always validate important data on the server too: browser checks can be skipped.
Questions
Can a regex check that an email really exists?
No. It only checks the shape. To know an address works, send it a confirmation email.
Why does the date pattern accept 30 February?
Regex checks characters, not calendars. Check real dates in your code after the pattern passes.
Can I use these in Python, PHP or Java?
Yes. They avoid features that only one language has. In Python use re.fullmatch; in PHP wrap the pattern in slashes.
Is my data private?
Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.
Is it free?
Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.
