Tools
Calculations run in your browser; nothing is sent to the server (except bcrypt).
Subnet calculator
Enter an address with a prefix (192.168.1.10/24 or 2001:db8::1/64), or an address and a netmask separated by a space.
chmod calculator
Tick the permissions, or type an octal code or symbolic notation.
Punycode converter
Enter domains, one per line. The direction is detected automatically: xn-- labels are decoded, everything else is encoded.
Case converter
Paste your text and pick a style.
Password generator
Passwords are produced by the browser's cryptographic generator and never leave your device.
Hash generator
MD5 and SHA are computed in the browser; text and files are never uploaded. bcrypt is computed on the server.
File download time
Enter the file size and your connection speed.