Clock: Time Zones & Alarms + Stopwatch & Timer

A clean, lightweight clock utility: world clock, alarms, stopwatch, and timer.

Clock is a small browser popup with four time tools. It opens on the tool you used last. World Clock shows the current time, date, and time-zone abbreviation for cities you add, and how far ahead of or behind your time each one is. Pick from 57 cities, including New York, London, Mumbai, Tokyo, and Sydney. Times use your system clock. Alarms let you set a time and an optional name, then turn each alarm on or off. Each alarm shows when it rings next, and you can click one to change it. When an alarm rings, a beeping sound plays for up to a minute and open web pages blur and show the name, time, Snooze, and Stop. Snooze rings again in 5 minutes. Stop ends this ring and keeps the alarm for the next day. Alarms ring even when the popup is closed. Stopwatch includes start, pause, resume, reset, and laps, with centiseconds. Elapsed time stays correct if you close the popup and open it again. Press Space to start or pause. Timer counts down from the hours, minutes, and seconds you enter, or from a one-tap preset of 1, 5, 10, 15, or 25 minutes. You can pause, resume, and reset, and press Space to start or pause. At zero, a sound plays and the page shows 00:00 in red, Close, and “Time's up!” The screen and sound end after 4 seconds, or sooner if you press Close. The stopwatch is free. World Clock, Alarms, and Timer are premium inside the extension. Already bought Premium? Enter your license key in Clock to unlock it in up to 2 browsers at a time. Clocks, alarms, and timer settings stay on your device.