Chmod Calculator

Convert Linux file permission numbers and symbols

Chmod Calculator is a free online Developer tool. Convert Linux file permission numbers and symbols Related terms: chmod · permission · 权限 · 777 · 755 · linux. Use it on this page without signing in.

数字表示
0644
符号表示
rw-r--r--
所有者 (owner)
所属组 (group)
其他人 (other)
特殊权限
从数字反查

勾选权限实时显示数字（如 755）和符号（如 rwxr-xr-x）。读=4，写=2，执行=1。

Help

使用说明

  1. 勾选所有者/群组/其他用户的读、写、执行权限
  2. 自动生成数字（如 755）和符号（如 rwxr-xr-x）两种表示
  3. 也可输入数字反查对应权限
  4. 一键复制 chmod 755 file 命令

常见问题

  • 数据处理安全吗？ 全程浏览器本地计算，不联网
  • 777 是什么意思？ 所有用户均有读、写、执行权限，存在安全风险，谨慎使用
  • 特殊位怎么算？ setuid(4)/setgid(2)/sticky(1) 作为前缀加在三位数字前

补充说明

权限三组分别对应：所有者(owner)、所属群组(group)、其他用户(others)，每组为 读(4)+写(2)+执行(1) 之和。

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FAQ about Chmod Calculator

What can Chmod Calculator do?

Chmod Calculator is a Developer tool. Convert Linux file permission numbers and symbols You can finish the job on this page.

Who should use Chmod Calculator?

Anyone handling chmod · permission · 权限 · 777 · 755 · linux who does not want to install desktop software can use Chmod Calculator in the browser.

Is Chmod Calculator safe? Is my data uploaded?

This tool runs in your browser. We do not collect the content you enter into Chmod Calculator just because you used it.

What similar tools exist?

Related tools in the same Developer group are listed at the bottom of this page.