Taiwan National ID Validator
Validate Taiwan national ID numbers with format checks, checksum verification, and random generation.
Taiwan National ID Validator
Validate Taiwan national ID numbers with format checks, checksum verification, and random generation.
About the Taiwan national ID validator
Area letter and gender digit
Taiwan national ID numbers use one leading letter followed by nine digits. The leading letter maps to an issuing area code, and the first numeric digit is interpreted as the gender or resident-category marker supported by this tool.
Weighted checksum and sample generation
The validator converts the area letter to its numeric code, applies the public weight sequence, and compares the expected final digit. Random samples may constrain the area letter and gender marker, but they are test data only and are not proof of a real government record. The current input can be encoded into the share URL, so avoid sharing links that contain real ID numbers.
FAQ
Common questions and answers about this topic.
Can I validate a Taiwan national ID in the browser?
Yes. The tool checks the format, issuing-region letter, gender or resident marker, and checksum locally in your browser. Do not enter real personal data; use generated samples when you only need test input.
What format does a Taiwan ID number use?
A Taiwan ID number has one leading letter followed by nine digits. The letter maps to an issuing city or county, the next digit marks gender or resident category, and the final digit is the checksum.
How is the Taiwan ID checksum calculated?
Convert the leading letter to two digits (A=10 through Z=33), apply weights 1, 9, 8, 7, 6, 5, 4, 3, 2, 1, 1, and sum the results. The ID passes only when the total is divisible by 10.
Can this generator create a real Taiwan ID number?
No. Generated numbers only match the public format and checksum rules. They do not prove a real government record and must not be used for impersonation, account signup, or unlawful purposes.
Does this support ARC or resident ID numbers?
The validator recognizes second-digit 8 and 9 as ARC male and female resident markers and applies the same public checksum flow. Treat the result as format validation only, not official identity verification.