Timer in hours

00:00:00

Choose a ready-made countdown

1 hour2 hours3 hours4 hours5 hours6 hours7 hours8 hours9 hours10 hours11 hours12 hours13 hours14 hours15 hours16 hours17 hours18 hours19 hours20 hours21 hours22 hours23 hours24 hours

Themed timers

Kitchen timerWorkout timerStudy timerPomodoroMeditation timerSleep timerTimer for childrenMusic timerWork timer

Related tools

Online alarm clockOnline stopwatchCountdownDate calculatorsCalendar and datesPublic holidaysAll tools →

How to use the online timer

A timer in hours suits long work, travel, slow cooking and rest periods. Enter the interval when the activity begins, then check remaining time without converting units in your head. A countdown measures elapsed time, so it continues consistently across a daylight saving change.

For shared starts, add the zone separately. AEST, AEDT, ACST, ACDT and AWST can produce different local readings, and not every state changes clocks. The unit controls duration only; transport timetables, school calendars and public-holiday dates need a current source.

Choose an alert appropriate for the setting and check that device volume, power and sleep settings will let it sound. Keep the timer visible, make one calm adjustment if conditions change, and let the alert mark a clear finish.