validation
India PIN Code Regex Pattern
Validates Indian PIN (Postal Index Number) codes. PIN codes in India are exactly 6 digits and the first digit must be 1-9 (0 is not assigned as a first digit).
/^[1-9]\d{5}$/ What each part matches
^[1-9] — first digit 1-9 (not 0)\d{5}$ — five more digits✓ These match
- 110001
- 400001
- 560034
- 682001
✗ These don't
- 012345
- 11000
- 1100011
- ABC123
Use in your code
JavaScript
const re = /^[1-9]\d{5}$/;
re.test(input); // → true or falsePython
import re
re.fullmatch(r"^[1-9]\d{5}$", input)PHP (PCRE)
preg_match('/^[1-9]\d{5}$/', $input);Go
re := regexp.MustCompile(`^[1-9]\d{5}$`)
re.MatchString(input)FAQ
Does this india pin code regex work in JavaScript?
Yes. Every pattern in the Utilko regex library is tested to work in JavaScript RegExp, PCRE (PHP, Nginx), and Python `re`. Where flavor matters (lookbehind, named groups), the pattern page flags it.
How do I use this pattern?
Copy the pattern from the code block above. In JavaScript:
new RegExp('^[1-9]\d{5}$') or literal /^[1-9]\d{5}$/. Or click "Try in regex tester" to open it pre-loaded in Utilko's browser-based regex tester.Should I use this for security-critical validation?
Client-side regex is fine for UX (immediate feedback on a form). For anything security-critical — payments, auth, data integrity — always re-validate server-side using the same pattern PLUS domain-specific checks (Luhn checksum for cards, actual email delivery test, DNS resolution for domains).