What does a Uganda NIN encode?

The NIRA NIN is 14 alphanumeric characters. By documented convention the first character is the applicant class (C = citizen), the second is the gender code (M or F), the third and fourth are the last two digits of the year of birth, and the remainder is a NIRA-assigned serial.

Why is the serial not verified?

NIRA does not publish a check-digit algorithm, so this tool validates the 14-character alphanumeric format and the documented class, gender and birth-year prefix but cannot verify the serial.

Is my NIN sent anywhere?

No. The validator is privacy-first. All processing happens locally in your browser with no network requests — your NIN never leaves your device and is never checked against the NIRA database.

How long is a Uganda NIN?

Exactly 14 characters. Unlike many national IDs it is alphanumeric, mixing letters and digits, so it cannot be validated as a purely numeric string.

What does the C at the start of a NIN mean?

The first character is the applicant class. C marks a Ugandan citizen, which is the common case on a National ID card; F is used for some foreign or non-citizen records. Any other first character is unrecognised.

Can I tell someone's age from their NIN?

Only approximately. Positions 3 and 4 hold the last two digits of the year of birth, so a NIN whose third and fourth characters are 90 indicates a birth year ending in 90 — but the day, month and century are not encoded.

What is the difference between a NIN and a National ID card number?

The NIN is the permanent 14-character identity number tied to the person and printed on the card. The card itself also carries a separate document number that changes on reissue. This tool decodes the NIN.

Why can't the tool tell me if a NIN is real?

NIRA does not publish a check-digit algorithm and does not offer a public lookup. The tool can confirm the format and the documented class, gender and birth-year prefix, but only NIRA can confirm a NIN was actually issued.

Uganda NIN Validator & Decoder — Class, Gender & Birth Year

Uganda NIN validator and decoder

The NIN (National Identification Number) is the unique identity number issued by Uganda’s National Identification and Registration Authority (NIRA) and printed on the National ID card (Ndaga Muntu). It is required for voter registration, opening a bank account, SIM registration, employment and access to many government services. Unlike most national IDs it is alphanumeric, so it needs character-level rather than numeric validation. This tool checks the format and decodes the documented parts, entirely offline.

How it works

A NIN is exactly 14 alphanumeric characters (A–Z and 0–9), upper-cased automatically. By documented convention the layout is [C][G][YY] followed by a 10-character serial:

Position 1 — applicant class: C = Ugandan citizen, F = foreign / non-citizen record.
Position 2 — gender code: M = male, F = female.
Positions 3–4 — the last two digits of the year of birth.
Positions 5–14 — a serial assigned by NIRA.

NIRA does not publish a check-digit algorithm, so the only deterministic offline checks are the 14-character alphanumeric format and a recognised class and gender prefix. The serial itself cannot be verified.

Example

Take the NIN CM90012345678X. The tool reads position 1 as C (Ugandan citizen), position 2 as M (male), positions 3–4 as 90 (born in a year ending in 90), and the remaining 012345678X as the NIRA serial. The format passes — 14 valid alphanumeric characters with a recognised class and gender — so it is well-formed, though NIRA alone can confirm it was actually issued.

Position	Field	Example
1	Applicant class	C (citizen)
2	Gender	M / F
3–4	Birth year (last 2 digits)	90
5–14	NIRA serial	012345678X

Privacy-first: everything runs in your browser with no network requests. The tool decodes structure only — it never queries the NIRA database, and your NIN never leaves your device.