Aadhaar Format Checker
Validate your Aadhaar number's 12-digit format and Verhoeff checksum. This checks mathematical validity only — it does NOT verify if the number belongs to anyone.
🔒 Privacy: Your Aadhaar number is checked locally in your browser. It is never sent to any server or stored anywhere.
⚠️ Disclaimer: This tool only checks the mathematical format and checksum. It does NOT verify if the Aadhaar number is real, belongs to anyone, or is issued by UIDAI. Do not use this for identity verification.
Frequently Asked Questions
The Verhoeff algorithm is a checksum formula used to validate Aadhaar numbers. The last digit of a valid Aadhaar number is a check digit calculated from the first 11 digits using the Verhoeff algorithm. This helps catch typographical errors.
No. This tool only checks the mathematical format and checksum. It cannot verify if an Aadhaar number is actually issued by UIDAI or belongs to any real person. For official verification, use the UIDAI website.