What are the different NID lengths?

Bangladesh uses three forms — a 10-digit Smart NID card number, the old 13-digit NID, and a 17-digit NID that prefixes the 13-digit number with a 4-digit birth year. This tool accepts all three.

How accurate is the validation?

The NID has no public checksum, so the tool validates the accepted lengths (10/13/17) and, for the 17-digit form, that the embedded birth year is plausible. The geo and RMO codes are decoded from the documented structure but not mapped to named districts. It never confirms a number actually exists.

Is my NID sent anywhere?

No. This tool is privacy-first — all processing happens locally in your browser and the number never leaves your device.

Bangladesh NID Validator

Bangladesh NID validator

Validate a Bangladesh National ID (NID) in any of its three forms — the 10-digit Smart NID card number, the old 13-digit NID, or the 17-digit NID that begins with a 4-digit birth year. The tool detects the format, checks the structure, and reads the embedded birth year, division/district code and RMO (Rural/Municipality/Other) type where present.

It is privacy-first: nothing leaves your browser. The NID has no public checksum, so this validates the deterministic structure only and never checks the number against any government database.