South Korea RRN Validator – 免费在线工具
South Korea RRN Validator
Verify the structure of a Korean Resident Registration Number.
About the South Korea RRN Validator
The South Korea RRN (Resident Registration Number) Validator is designed to verify the 13-digit identification number issued to all residents of South Korea. The RRN encodes the person's date of birth, gender, and registration location, followed by a modulo checksum digit. Our tool mathematically validates the RRN to ensure it is structurally authentic without storing any sensitive data. It's an excellent utility for developers and HR teams needing to implement basic data sanitization and validation for Korean users or employees.
Frequently Asked Questions
What information is in the RRN?
The first 6 digits represent the date of birth (YYMMDD). The 7th digit indicates gender and century (e.g., 1 for 1900s Male, 2 for 1900s Female, 3 for 2000s Male). The remaining digits contain location codes, a sequence, and a final check digit.
How is the checksum calculated?
Each of the first 12 digits is multiplied by a specific weight (2 through 9, then 2 through 5). The sum is divided by 11, subtracted from 11, and the final digit is taken. (Note: Since 2020, South Korea has moved to randomize the back digits for new issues, but historical validation still applies to older numbers).
Is my data safe?
Yes, the validation runs entirely on your device using local JavaScript. Your RRN is never saved, cached, or transmitted to any server.
如何使用 South Korea RRN Validator 工具
使用我们的 South Korea RRN Validator 非常简单且完全免费。我们专为日常用户设计了 开发工具，让您无需下载复杂的软件或注册账户即可快速完成任务。
- 上传文件: 将文件拖放到上方的上传区域，或点击从您的设备中选择。
- 等待处理: 我们的高速云服务器将即时处理您的文件，且不会损失任何质量。
- 下载: 点击下载按钮，将处理完成的文件直接保存到您的设备。
100% 安全
您的文件会被加密，并在 1 小时后从我们的服务器自动删除。您的隐私有保障。
闪电般快速
我们采用高性能云处理，确保您的文件在几秒内（而非几分钟）准备就绪。
支持移动设备
无需安装应用。在 iOS、Android、Mac 或 Windows 上都能流畅使用我们的工具。