chmod Calculator
Convert between symbolic, octal and rwx Unix permissions.
Interactive controls load with JavaScript. Processing stays in your browser.
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How to use
- 勾选用户/组/其他的读写执行，或输入八进制、9 位符号串。
- 即时得到 chmod 命令与 rwx 分解。
- 常用：755 可执行/目录，644 普通文件，600 私密。
- 不修改你的真实文件系统，仅计算表示。
FAQ
Does chmod Calculator upload my data?
No. chmod Calculator runs locally in your browser and does not upload content to www.518882.com or third-party APIs.
Do I need an account?
No. Open and use — no signup, login, or paywall. Open chmod Calculator and use it — no signup, login, or paywall.
How is this different from upload-based tools?
Tools run locally in your browser; content is not sent to our servers for processing — suited to private text and drafts.
Are there limits?
Limited by device memory and the browser; very large inputs may slow the page. There is no account quota.