Free, fast IT tools with no account required.

Toolbit brings together everyday calculators and utilities for networking, development, sysadmin, and security: an IPv4 subnet calculator, VLSM calculator, number base converter, secure password generator, cron expression parser, and JSON formatter, among others. Every tool runs entirely in your browser — no sign-up, no usage limits, and nothing you enter is ever sent to a server. Built for people working with networks, code, or infrastructure who need a fast, reliable answer without distractions or intrusive ads. The catalog keeps growing: if a tool you need isn't here yet, the next one is probably already on its way.