How to find your Aadhaar card number online?

You can retrieve your lost or forgotten Aadhaar number online by visiting the official UIDAI website. Navigate to the Retrieve Lost or Forgotten EID/UID section under the My Aadhaar tab. Select the Aadhaar Number (UID) option, enter your full name and registered mobile number or email address, and complete the captcha verification. After submitting the OTP received on your registered mobile, your 12-digit Aadhaar number will be sent to you via SMS or email. This service is free of cost.