TL;DR: Free Macau resident ID validator: 8-digit format check with leading-digit (1/5/7) category parsing. The official checksum algorithm is not public — this tool honestly validates format only. No online lookup.
This tool runs entirely in your browser. Open DevTools → Network panel and search your input — it appears in no request.
Usage Guide
A Macau resident ID is 8 digits (often slash-separated after the 7th): the leading digit encodes how residency was obtained — 1 Portuguese-document descent, 5 born in Macau, 7 other routes. This tool validates the structure and parses the leading-digit category.
1. Why format-only (an honesty note)
Unlike Hong Kong or Taiwan, Macau’s Identification Services Bureau has never published the check-digit formula; the variants circulating online contradict each other and cite no official source. Fabricating a checksum is worse than having none — falsely rejecting a real number or blessing a fabricated one are both failures. This tool therefore validates structure and leading category only; authoritative verification belongs to official channels.