Convert between numeric (755) and symbolic (u=rwx,g=rx,o=rx) chmod permission formats. See detailed breakdown for owner, group, and others. Everything runs locally in your browser — nothing is uploaded.
Convert between hexadecimal bytes and ASCII text. Supports custom delimiters and real-time bidirectional conversion. Everything runs locally in your browser — nothing is uploaded.
Inspect any string — view character count, byte length, word count, line count, Unicode code points, and non-ASCII character breakdown.
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Chmod Calculator lets you convert between numeric (755) and symbolic (u=rwx,g=rx,o=rx) chmod permission formats. See detailed breakdown for owner, group, and others. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Convert between numeric (755) and symbolic (u=rwx,g=rx,o=rx) chmod permission formats. See detailed breakdown for owner, group, and others. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Paste or type your content directly into the provided text area.
Yes. After the initial page load, Chmod Calculator runs entirely on your device with no internet connection needed. All processing is done locally.
Numeric uses octal digits (e.g., 755), while symbolic uses letters (e.g., u=rwx,g=rx,o=rx). Both represent the same permissions.
Read (4), write (2), and execute (1). Add them together: 4+2+1=7 (full), 4+0+1=5 (read+execute), etc.
Yes. Enter symbolic notation like u=rwx,g=rx,o=r and get the numeric equivalent (754).
The permission values are the same for files and directories, but the execute bit means different things (traverse for directories, execute for files).
SSH Key Generator
Generate RSA, ECDSA, and Ed25519 SSH key pairs with proper OpenSSH format output. RSA uses RSASSA-PKCS1-v1_5 (2048-bit). ECDSA supports P-256 and P-384. Ed25519 uses a pure-JS implementation (no server). Public keys paste directly into ~/.ssh/authorized_keys.
CIDR Calculator
Calculate CIDR subnet ranges — network address, broadcast, first/last host, total hosts, and netmask.