Online Timer

How to use Online Timer

1. 1
   Set your duration

   Enter hours, minutes, and seconds in the input fields, or click any quick preset button — from 30 seconds to 2 hours — to set the timer instantly without typing.

2. 2
   Start the countdown

   Click Start to begin. The large display shows remaining time and the progress bar depletes as time counts down, turning red in the final 10% to signal urgency.

3. 3
   Pause or resume at any time

   Click Pause to hold the timer without losing your place. Click Resume to continue from exactly where you left off. The timer stores its end timestamp so it stays accurate even in background tabs.

4. 4
   Wait for the alert

   When the countdown reaches zero an audible beep plays directly in your browser and a 'Time's up!' message appears. Click Restart to run the same duration again, or Reset to start fresh.

5. 5
   Try Pomodoro or Stopwatch mode

   Scroll down to the Pomodoro section to track focused work sessions with automatic session counting. Toggle to Stopwatch mode at the top of the tool to count up from zero with centisecond precision and lap times.

Frequently Asked Questions

How do I set a countdown timer?

Enter the hours, minutes, and seconds you want in the input fields at the top of the page, then click Start. You can also click any quick preset button — for example '5 min' — to set and start a timer instantly without typing.

What is the Pomodoro technique?

The Pomodoro Technique is a time management method developed by Francesco Cirillo in the late 1980s. You work in focused 25-minute blocks called 'Pomodoros', separated by 5-minute short breaks. After four Pomodoros you take a longer 15–30 minute break. The technique reduces mental fatigue, improves concentration, and creates a sense of urgency that helps you stay on task.

How long should a Pomodoro work session be?

The classic Pomodoro work session is 25 minutes, but you can customise the duration in the Pomodoro section. Some people prefer 45-minute or 50-minute sessions for deep work. Experiment to find what length lets you stay focused without burning out.

Can I run multiple timers at the same time?

Yes. The Multiple Timers section lets you run up to five independent countdown timers simultaneously, each with its own label, duration, and controls. This is handy when cooking several dishes at once or managing different tasks in parallel.

Will the timer continue if I switch browser tabs?

Yes. The timer stores the end timestamp rather than decrementing a counter, so it stays accurate even when the browser throttles background tabs. Switching tabs or minimising the window will not cause the timer to drift or lose time.

Does the timer make a sound when it finishes?

Yes. When the countdown reaches zero a short audible beep is generated directly in your browser using the Web Audio API — no audio files are downloaded. Make sure your device is not on silent. The display also flashes and shows a 'Time's up!' message.

What is the best timer duration for studying?

Research supports study sessions of 25–50 minutes followed by a 5–10 minute break. The Pomodoro Technique's 25-minute default is a good starting point. Longer sessions of 45–50 minutes work well for tasks that require deep concentration. Avoid studying for more than 90 minutes without a proper break.

How is a stopwatch different from a countdown timer?

A countdown timer counts down from a set duration to zero — useful when you want to limit how long something takes. A stopwatch counts up from zero — useful when you want to measure how long something takes. Both are available on this page; use the Timer / Stopwatch toggle to switch between them.

Can I use this timer on my phone?

Yes. The timer is fully responsive and works on any modern smartphone or tablet browser, including Safari on iOS and Chrome on Android. All features — presets, Pomodoro, stopwatch, and multiple timers — are available on mobile.

What happens if I accidentally close the tab while the timer is running?

The timer automatically saves its end timestamp to sessionStorage every tick. When you reopen the tab or reload the page the timer detects the saved timestamp and resumes from the correct remaining time, showing a brief 'Timer resumed' notice. This only works if you reopen the same tab in the same browser session.

Related Tools