How to use
1
Paste or type the ID number above (use the sample to try it out)
2
Click “Check”, and the tool verifies structure and check digit locally in your browser
3
See instantly whether it is valid — nothing is uploaded, no real identity is looked up
✅What this tool does
- Check the number is exactly 8 digits
- Read resident category from the first digit (1/5/7)
- Note that Macao IDs have no public check digit — structure only
💡Tips
- Valid does not mean it exists: only encoding rules and checksum are verified, no personal data is looked up
- Do not enter other people’s real ID numbers — protect personal privacy
- Numbers are processed locally in your browser, never uploaded — no signup, no install
🔒 Local processing · numbers not uploaded · only structure and checksum are checked
FAQ
Q1Why only a format check for Macao IDs?
Macao ID numbers have no officially published check-digit rule and no agreed mathematical checksum. So the tool can only judge whether the number is a plausible 8-digit structure and read its category — it cannot verify a check digit like mainland China / Hong Kong.
Q2Is the number uploaded?
No, everything runs locally in your browser and the number never leaves your device.
Q3Does passing the format check mean the ID is valid?
No. It only means the length and leading category are plausible — not that it exists or is valid.