Set a countdown in hours, minutes and seconds. Use a quick preset or choose your own duration.
Online Timer
Hours · Minutes · Seconds
Settings
Ready.
Your running timer or stopwatch is restored in this browser. Keep this page open for the finish alert; closed or sleeping devices cannot reliably play it.
How to use the timer
Choose a preset or enter hours, minutes and seconds, then select Set timer. Press Start to begin. Pause to hold the remaining time, Resume to continue, or Reset to return to the selected duration.
When does the timer play a sound?
Open Settings to enable sound, adjust the volume, or repeat the alarm until stopped. Try Test sound before starting. The finish message appears even when sound is disabled. Browser audio settings, muted tabs and device sleep can prevent an alert.
Will it keep counting in another tab?
The remaining time is calculated from an end timestamp rather than counting screen updates. Switching tabs can slow screen updates; returning to the page refreshes the display. Keep the page open for alerts.
Use a timer with your calendar
A calendar organizes your day; a timer helps you work through one task. Mark a study or work session on your calendar, then choose a duration for that session.