Subnet & Password Tools
A fast IPv4/IPv6 subnet calculator and a strong password & passphrase generator.
Everything on this page runs in your browser — nothing you type or generate is ever sent to our servers.
Subnet calculator Runs in your browser
Type an IPv4 or IPv6 address with a prefix or netmask — results update as you type. Drag the slider to resize the subnet.
Password generator Runs in your browser
Generate strong random passwords or memorable passphrases, in English or Swedish. Adjust everything to match your policy.
Quick picks
Type
Words
Total length
Language
Theme
Start with digits
Separator
Style
Length
Characters
Start with digits
Dashes
Click a password to copy it.
Randomness comes from your browser’s cryptographic generator. Wordlists: EFF large wordlist (English, 7,771 words) and a curated Swedish diceware list (7,534 words).