Aadhaar Card Format Validator
Check Aadhaar number format validity using Verhoeff algorithm. This tool only validates format - for official verification, visit UIDAI portal.
Privacy & Security This tool performs mathematical validation using Verhoeff algorithm. No data is stored or transmitted. All processing happens locally in your browser.
Aadhaar Format Guide
1234 5678 9012
Format Requirements:
• Total 12 digits (no alphabets or special characters)
• First digit cannot be 0 or 1
• Last digit is checksum calculated using Verhoeff algorithm
• Can be entered with or without spaces
• Example valid format: 234567890123
• Total 12 digits (no alphabets or special characters)
• First digit cannot be 0 or 1
• Last digit is checksum calculated using Verhoeff algorithm
• Can be entered with or without spaces
• Example valid format: 234567890123
Format validation only. For official verification, visit UIDAI Portal
Why use Aadhaar Format Validator?
Our Aadhaar format validator helps you check if an Aadhaar number follows the correct format using the Verhoeff algorithm. This is useful for developers, form validation, or checking if a number is formatted correctly before official verification.
- Validates Aadhaar format using Verhoeff checksum algorithm
- Checks if first digit is valid (not 0 or 1)
- Verifies correct 12-digit length
- Instant format validation without storing data
- 100% local processing - no data sent to servers
- Educational tool for understanding Aadhaar format
- Links to official UIDAI portal for real verification