Please enter your ID number for verification.
• Privacy statements:
All checks are done in the local browser. Your ID number will not be uploaded to any server.
💡 Example of test (virtual number)
What's the ID number checker?
The ID number checker is a professional online tool for quickly verifying the authenticity of 18 identification numbers in mainland China and for automatically deciphering the details contained therein. The ID number is a highly structured data set that includes multiple parts, such as the area code, date of birth, serial number and verification code, each with a specific meaning and certification rule.
This tool determines the validity of an identity card number by checking the format of the identity card number, the validity of the area code, the validity of the date of birth and the validity of the verification of the identification number. It also automatically draws information from the identity card number on origin, date of birth, sex, age, birth and constellations, which helps you to quickly learn all the information in the identity card number.
Core strengths:It is completely free, non-registration, local processing, privacy security, real-time validation and support for all regions of the country.
Main features
- It's totally free.: No registration required, no restrictions on use, all functions permanently free of charge
- Privacy and security: All processing done locally in browsers without uploading data to server
- Validation in real time: Enter an instant response without waiting to get results quickly
- Cross-platform support: Support desktop and mobile devices, whenever and wherever they are used
- Detailed ParsingNot only is it true and false, but it also analyzes information on origin, date of birth, sex, etc.
- National coverage· Support for regional codes in all provinces, autonomous regions and municipalities directly under the Central Government
- Structure Presentation: clear display of the four components of the ID number
• Knowledge of ID numbers
Structure of ID number
The 18 ID numbers consist of four parts:
- Area code (6 places): Indicate the residence of the holder of the identity card, the first two being the province code, the second being the city code and the second being the district code
- Date of birth (8 places): in YYYYMMDD, which indicates the date of birth of the holder of the identity card
- Order code (3 places): the order number indicating the same date of birth in the same area, the last of which is the gender (odds male and even female)
- Validation (1 bit): calculated by a specific algorithm to verify the authenticity of the ID number
What is the area code?
The first two in the district code indicated provinces, for example: 11 Beijing, 12 Tianjin, 13 Hebei, 14 Shanxi, etc. This tool supports all effective regional codes, including all provinces, autonomous regions, municipalities directly under the Central Government and special administrative districts.
Validation of date of birth
The tool examines whether the date of birth is reasonable, including whether the month is between 1 and 12, whether the date is in line with the number of days of that month, whether the year is considered, etc. This would exclude many invalid identity card numbers.
Validation of the code
The verification was obtained by weighting the first 17 figures, then by simulating 11 and finally by using the balance balance. This algorithm effectively detects most input errors and forged ID numbers.
Gender judgement
The 17th place (last in the serial number) of the ID number indicates gender. The odd number (1, 3, 5, 7, 9) indicates the male and the even number (0, 2, 4, 6, 8) indicates the female.
• Common problems
Q: Can this tool verify the authenticity of the ID number?
A: This tool will verify the correct format of the ID number, including the area code, date of birth and the verification code. However, it cannot be connected to the database of the public security services, so it cannot verify whether the number has actually been issued.
Q: Will my ID number be kept?
A: No. All authentications are done locally in your browser, not uploaded to any server, and not saved. You can use it with complete confidence.
Q: Support the old version of 15 ID numbers?
A: Currently, this tool supports only 18 ID numbers. If you have 15 old ID numbers, you can convert to 18 places by adding the first six places to the regional code and the first two places to the year of birth.
Q: How do you judge the validity of the ID number?
A: The tool examines whether the area code is valid, whether the date of birth is reasonable, and whether the calibration is correct. If all checks are passed, the number is valid.
Q: Can I use this tool offline?
A: Yes, you can use it offline. The tool is operated locally by your browser. Network connection is not required. You can save the page locally, whenever you want.
Use scene
- Data validation: Rapidly verify the correct format of ID numbers when filling out forms or registered accounts
- Information Query• To obtain information on the date of birth, sex, place of origin, etc. from the ID number
- Age calculation: age is calculated quickly, based on the date of birth in the ID number
- The Constellation and the Constellation.: Search for the birth of the schollies and constellations according to the date of birth
- education learningStudents learning the structure of their ID numbers and reference tools for the authentication of algorithms
- Development testing: Developer uses the ID number validation function
• Privacy and security
Fully local:All ID numbers are checked locally on your browser and no data will be sent to the server. Your ID number will not be uploaded or stored at all.
No registration is required:Use this tool without creating an account or providing any personal information. Use completely anonymously.
Offline available:You can save the page locally, completely offline, without relying on any network connection.
Open Source Transparency:The code for this tool is open-source, and you can see the source code for how it works.