Chmod Calculator
🔐 Convert octal chmod to rwx, binary, and copy chmod commands. Client-side only. No sign-up.
Presets
Owner (user)
Group
Others
644420110 100 100-rw-r--r--u=rw-,g=r--,o=r--chmod 644 file.txtChmod Calculator
Free chmod calculator: turn octal modes like 644 or 4755 into readable rwx permission strings, see binary triplets for owner, group, and others, and copy a ready-to-run chmod command. Use it for Docker images, deployment scripts, shared servers, and learning Unix file permissions. No sign-up required.
Use cases
- DevOps and backends – Match container USER, volume mounts, and CI chmod steps.
- Shared hosting and SSH – Decode numeric modes from FTP panels or stat output.
- Learning – See how 755 differs from 644 and when sticky or setuid bits apply.
⭐ Rate this tool
Your feedback helps us improve
🔄 Workflow Suggestion
Try combining multiple tools for a complete workflow. For example: Notepad → Text Encryption → Save to Cloud or Date Calculator → Calendar → Countdown Timer
Related Tools & Recommendations
💡 You might also need
Base64 Encode/Decode
Convert text to Base64 format and decode Base64 strings
JSON Formatter & Validator
Format, validate, and minify JSON data with syntax highlighting and error detection
Structured Log Viewer
Paste NDJSON or logs with embedded JSON. Filter by level, search, expand objects, and copy. Client-side only.
📁 More Utilities Tools
Structured Log Viewer
Paste NDJSON or logs with embedded JSON. Filter by level, search, expand objects, and copy. Client-side only.
CSP Helper
Parse Content-Security-Policy values, explain directives, flag common weak patterns, and copy an advisory stricter draft.
SRI Generator
Generate Subresource Integrity hashes for script and link tags from a URL or file upload. SHA-256 and SHA-384.
🔗 Additional Related Tools
Send Feedback
We'd love to hear your thoughts! Your feedback helps us improve our tools and create a better experience for everyone.
Share Your Experience
Tell us what you think about this tool