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AFEA Serial Number Generator

Format: AFEA-YYWww-####-C — ISO week, zero‑padded global counter, and a check letter (digits-sum mod 24; alphabet without I/O).

Generate

Company

Keep as AFEA for policy consistency.

Date (for ISO week)

Uses ISO week year around New Year.

Sequence width

Change when growth needs it.

How many to generate

Global counter (next number)

Persists in this browser (localStorage). Never resets.

Show QR for each SN

Scannable code in the table below.

QR size (px)

Rendered via an online QR service.

QR content prefix (optional)

Encoded content = prefix + SN. Leave empty to encode just the SN.

Current ISO week based on selected date:

#	Serial Number	Base	Digits sum	Check	QR	Actions

Enter SN

Rule: remove non‑digits, sum digits, map sum mod 24 into alphabet ABCDEFGHJKLMNPQRSTUVWXYZ.

View results

These quick checks verify ISO week/year handling, checksum mapping, and the validator.

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