The quick-answer tools people reach for every day.
The utilities category covers the tools people reach for most often: quick arithmetic, unit conversions, QR code generation, and network lookups. These are the five-second answers that would otherwise send you hunting through a browser for something that works without logging in.
Basic arithmetic operations
Length, weight & temperature
Calculate percentages & changes
Generate QR codes instantly
Remove tracking parameters
Convert time between zones
Geolocation and ISP info
Domain name system records
The calculator handles basic arithmetic with keyboard support. The unit converter covers length, mass, temperature, volume, time, speed, and data size. The QR code generator turns any text or URL into a scannable PNG you can download. The IP and DNS lookup tools give you the kind of network information you would otherwise need a command-line utility for, which is especially handy on a phone or a shared computer where you cannot install anything.
Every one of these tasks can technically be done in a spreadsheet, a search engine result card, or a command line. The reason to use a dedicated browser tool is accuracy and reliability — the numbers come from well-defined formulas, the UI keeps your inputs visible while you work, and there is no risk of a typo silently becoming part of the result.