Web Clock

Online Timer

Set a countdown timer online in seconds — free, no sign-up, no download. Pick your time, choose a sound, and let it run.

  • Saved in this browser
  • No download or sign-up
Ready to start
Hours
Minutes
Seconds

Click the digits to set your time

Start to see the estimated finish time

Starting automatically adds this timer to your list

SpaceStart / pauseNNew timerFFull screen
Your timers

Your timers 0 / 12

Each timer runs independently. Switching keeps the others running.

Make time for your first task.

Set a duration and start, or add it to the list for later.
Saved in this browser only
How to start timers · Common timer lengths

Start with an everyday moment

Select to fill in a new timer; it will not start automatically.

A timer in your browser

Choose a time from 10 seconds to 24 hours, press Start, and get an alarm at zero. It works on a laptop, Chromebook, tablet or phone, with nothing to install. Use full screen when people need to see the countdown from across the room.

How to use this online timer

  1. 01

    Set your time

    Enter hours, minutes and seconds, or choose a preset such as 5 minutes or 2 hours.

  2. 02

    Choose your alarm

    Open Sound settings in the header to choose and test an alarm, adjust volume, or select Silent.

  3. 03

    Start the countdown

    Start a timer on its own, or add more and run them together or in sequence. Pause and Reset remain available for each timer.

  4. 04

    Go full screen

    Use the full-screen button to show large digits on a TV, projector or classroom display. Press Escape to leave.

What people use it for

  • Teachers and classrooms

    Give reading, quizzes or group work a visible end time. Full screen puts the countdown on a projector, while Silent lets you finish without a bell.

  • Cooking

    Set six minutes for eggs, or a longer timer for baking and resting meat. Leave the tab open while following a recipe elsewhere; the selected sound plays at zero.

  • Workouts and intervals

    Time a plank, stretch or rest period. The countdown is recalculated from the clock, so switching tabs does not add drift to the interval.

  • Study and focus

    Try a 25-minute focus block followed by a five-minute break. A visible countdown makes the end of each session easy to judge.

  • Meetings and presentations

    Give speakers a fixed slot or time each agenda item. Put the display full screen on a second monitor so the remaining time is readable from a distance.

  • Meditation and breathing

    Choose Silent for a quiet five-minute reset or breathing session. The numbers still reach zero without interrupting the room with a chime.

Timer, stopwatch or alarm clock?

Online Timer

Use this timer when you know how long a task should take and want an alert at zero.

Online Stopwatch

Use the stopwatch to measure how long something actually took, counting up from zero.

Alarm Clock

Use the alarm clock when you want an alert at a specific time of day.

Online timer questions

Is this online timer free?

Yes. It is free to use without an account, download, or payment. You can keep up to 12 timers in this browser at a time.

Do I need to install anything or sign up?

No. It runs in your browser on a phone, tablet, laptop or desktop. Open this page, enter a time and press Start.

How do I set an online timer?

Set a duration, choose an alarm sound, and start the countdown.

  1. Enter hours, minutes, and seconds, or choose a common duration. Expand “How to start timers · Common timer lengths” below to edit and save ten presets on this device.
  2. Use the shared settings in the header to choose a sound, adjust volume, preview it, or mute alarms.
  3. Press Start. Pause and Resume remain available; Reset returns the timer to its original duration.

Can I set a timer for more than an hour?

Each timer can run from 1 second up to 99 hours, 59 minutes, and 59 seconds.

What happens if I switch to another tab?

The timer keeps counting down while this tab stays open and your device stays awake. It uses the target time rather than adding interval ticks, so background throttling does not slow the countdown. Your browser must allow audio for the alarm to sound.

Does the timer keep running if I close the tab?

The countdown cannot play a sound while the tab is closed. When browser storage is available, the timer is saved on this device and resumes from its end time when you reopen the page. If it ended more than 5 minutes ago, it is marked finished without playing a late alarm.

Can I run more than one timer at once?

You can keep up to 12 timers on the page. They run independently, so switching between them does not stop the others. Start each one manually, or expand “How to start timers · Common timer lengths” below to start all together or in sequence. Use the arrows to change their order.

Can I save my own timer presets?

Expand “How to start timers · Common timer lengths” below, choose Edit, enter ten different whole-minute durations from 1 to 1440, and choose Save presets. They are stored in this browser on this device and remain after you close the tab.

Can I use it full screen for a classroom or meeting?

Yes. Press Full screen above the display to show large digits, then press Escape to return to the page.

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