Aadhaar Number Validator
Verify that a 12-digit Aadhaar number is structurally valid: the length, the leading-digit rule, and the Verhoeff check digit that UIDAI appends. The check runs entirely in your browser and the number is never sent anywhere. It cannot tell you whether an Aadhaar is actually issued — only UIDAI can.
Aadhaar number
This checks structure and the check digit only, entirely in your browser — the number is never sent anywhere or stored. It cannot tell you whether an Aadhaar is issued, active or belongs to a real person; only UIDAI can.
FAQ
- Does this confirm the Aadhaar is real?
- No. It only checks that the number's structure and check digit are valid. Only UIDAI can confirm an Aadhaar is issued and active.
- Is my Aadhaar number uploaded?
- No. The check is pure JavaScript in your browser — nothing is sent to a server or stored.
- What is the Verhoeff check digit?
- The 12th digit of an Aadhaar is a checksum computed from the first 11 using the Verhoeff algorithm, which catches most single-digit typos and adjacent transpositions.
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Free to use, no sign-up. Calculations run in your browser — nothing you type is sent to a server. These tools are for general information only, not professional advice. See the full tool list.