A timer with presets
Start with a common duration or enter an exact hour, minute, and second.
Keep time without
losing your place.
Set a countdown, time a lap, or choose a clock time for an alarm. The page stays readable from across the room and remembers your usual setup.
Your time settings stay in this browser. There is no account, schedule upload, or hidden alarm history.
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Choose your clock
Keep this tab open for sounds. Browsers can pause background tabs to save battery.
Your mode, timer length, alarm time, and alert choice are remembered. Running state is restored when possible.
Three clocks, one tab01 02 03
Time that stays understandable.
A stopwatch with laps
Record intermediate times without stopping the main clock, then clear the list when you are done.
An alarm for today
Choose a clock time and a label. If the time has passed, the tool schedules tomorrow.
Timer questions.
Will the alarm work if I close the tab?
No. Keep the tab open. A normal web page cannot guarantee an alarm after the browser or device is closed.
Why did the sound not play?
Some browsers block sound until you interact with the page. Starting the clock once gives the page permission in most browsers.
Does it keep running in the background?
The tool calculates from real timestamps instead of counting animation frames, so it catches up accurately when the tab wakes. Battery-saving settings can still delay the alert itself.
What does the page remember?
It remembers your selected mode, preferred timer duration, alarm time, label, and sound on this device. It does not create an online schedule.