Online alarm clock
Set a time and leave this page open. The alarm rings in this tab, so keep your sound on.
No alarm set
New alarm
Your alarms
No alarms yet. Set one on the left.
The alarm rings in this browser tab. Keep the page open, your device awake and the sound on. A phone that locks its screen may stop the page, so for an early flight use your phone's own alarm as well.
More time tools
World clockLive time in hundreds of cities, filtered by continent.Time zone converterTurn a time in one place into the time in others.Meeting plannerFind the hours that suit every time zone.Time zonesUTC, GMT, EST, IST and the rest, explained.Time differenceHow many hours apart two cities are.Daylight saving timeWhen the clocks change in every country.CalendarThe year at a glance, with week numbers.Public holidaysPublic holidays by country and year.CountdownCount down to any date and share it.TimerA simple timer with an alarm.Pomodoro timerFocus in 25 minute rounds with breaks.StopwatchHundredths of a second, with laps.Date calculatorDays between dates, and dates plus days.Unix timestampEpoch seconds to a date and back.Clock widgetA free clock to put on your own website.