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Global ID Validator

Local processing · numbers not uploaded

A hub for structure and checksum validation of national ID/identity numbers across many countries. Runs locally in your browser, nothing uploaded — pick a country or region to start.

Choose a country / region

Mainland ChinaAvailable Resident ID check (18 digits) Taiwan, ChinaAvailable ID number checksum Hong Kong HKIDAvailable HKID check digit calculation MacaoAvailable Macao ID number check South KoreaAvailable RRN resident registration check United StatesAvailable SSN basic structure check JapanAvailable MyNumber check digit validation IndiaAvailable Aadhaar number check SpainAvailable DNI letter check PortugalAvailable NIF tax number check BrazilAvailable CPF dual check digits GermanyAvailable German ID card check PolandAvailable PESEL date of birth + check digit

Global ID Validator Guide

1

Pick the country or region you want to validate from the list above (Mainland China ID is live now)

2

Open the matching tool, enter the ID number, and it automatically checks structure and check digits

3

See instantly whether the number is valid — everything runs locally in your browser

✅What ID validation does

  • Verify digit count, format and structure such as region/date
  • Compute and verify check digits/checksums per each country’s official algorithm
  • Useful for dev testing, form validation, data cleaning and more

💡Tips

  • Valid does not mean it exists: only the algorithm and structure are checked, no real personal data is looked up
  • Do not enter other people’s real ID numbers — protect personal privacy
  • More countries and regions are being added — stay tuned

Each country and region has its own encoding rules and checksum algorithms for ID/identity numbers (check digits, Luhn, weighted sums and so on). This hub gathers those validators in one place so you can quickly find and use the right one.

🔒 Runs entirely locally in your browser, numbers are not uploaded; it only checks whether the structure and checksum are valid — no install, no signup.