Web Utilities

Small utilities that are handy to keep in a browser tab, from converting meeting times across time zones to looking up what an HTTP status code means.

4 tools

Tools in this category

Time Zone ConverterConvert a date and time from one time zone to many others, with correct daylight saving time, UTC offsets and zone abbreviations. Uses your browser's data.
Countdown Timer & StopwatchFree online countdown timer with an alarm sound and tab-title display, plus a stopwatch with lap times you can copy. Stays accurate in background tabs.
What Is My Screen ResolutionSee your screen resolution, viewport size, device pixel ratio, colour depth, touch support, colour scheme and user agent. Read locally, nothing stored.
HTTP Status CodesSearchable list of all HTTP status codes from 100 to 511 with plain-English meanings and when they occur, plus common nginx and Cloudflare codes.