Set an alarm for 7:15
AlarmaOnline.com is a free online alarm clock that works in any browser, with nothing to install and no sign-up. Pick the time, add a label and turn the alarm on: it will ring at the exact time with the sound you choose. Perfect for taking a nap, not missing a meeting or cooking without burning anything.
How do you set a free online alarm?
Setting an alarm in the browser is instant and doesn't require downloading any app. Just follow these steps:
- Open the Alarm tab and choose the time you want it to ring (for example, set an alarm for 7am to get up early).
- Type an optional label ("Wake up", "Meeting", "Move the laundry"), choose the sound —classic beep, soft chime, digital or siren— and select the repeat days if you need it Monday to Friday.
- Press Add alarm. Leave the tab open and the alarm clock will ring at the exact time, even if you're in another window.
You can also use direct links to set it up in one click: set an alarm for 7:00, for 6:30 or create a "wake me up in 20 minutes" reminder. And if you're after a quick countdown, try a 10-minute timer.
Online alarm clock: for early mornings, naps and every day
The online alarm clock from AlarmaOnline.com replaces your old-school alarm clock right on your computer or phone. You can create multiple alarms at once, name them and pick a loud alarm sound for heavy sleepers. The repeat-by-day feature is perfect for waking up early Monday to Friday and resting on the weekend, while the "once" mode works well for a one-off reminder. The snooze button gives you five more minutes, and the volume ramps up gradually to wake you gently.
Going to take a nap? A short nap of 10 to 20 minutes is ideal: use the timer or set an alarm and avoid slipping into deep sleep, so you get up rested and free of grogginess.
Online countdown timer
The online timer is a countdown with an audible alert, ideal for a thousand everyday situations: as a kitchen timer so you don't burn your food, to track sets and rest periods at the gym, to brush your teeth for the recommended two minutes or to manage study sessions. Choose minutes and seconds or use the quick presets of 1, 3, 5, 10, 15 and 30 minutes. When it reaches zero, the alarm sounds and you get a notification.
Online stopwatch with laps
The online stopwatch measures elapsed time to the hundredth of a second and lets you record laps to compare splits. It's handy for workouts and sports sets, for timing recipes, presentations or any activity where you need to know how long it took.
The Pomodoro Technique: focus in 25-minute blocks
The Pomodoro Technique, created by Francesco Cirillo, breaks work into focus blocks of 25 minutes followed by short 5-minute breaks; every four blocks you take a longer break. This rhythm helps you stay focused, avoid fatigue and beat procrastination. Our online Pomodoro timer alerts you at the end of each phase, and you can customize the length of the work and break periods to suit you.
White noise and sounds for sleep
White noise is a constant sound that contains every frequency equally and helps you fall asleep by masking annoying noise from your surroundings (traffic, neighbors, construction). Besides white, we offer pink noise (deeper and more relaxing, similar to rain or wind), brown noise (deeper still, like a waterfall) and the sound of rain. They're useful both for sleeping better and soothing babies and for concentrating while you study or work. It includes an auto-off timer (15, 30 or 60 minutes) so it stops on its own once you've fallen asleep.
World clock: the time around the world
The world clock shows the current time in the world's major cities —Madrid, London, New York, Mexico City, Buenos Aires, Bogotá, Tokyo and more— accounting for time zones and daylight saving time. It's very handy for coordinating international meetings, calls or video calls with people in other countries and knowing whether it's a good time to reach out.
Frequently asked questions
Will the alarm ring if I switch tabs or lock my phone?
As long as the tab stays open, the alarm will ring and you'll see a notification. On mobile, keep the screen active or the browser open to guarantee the alert; it's a good idea to plug it in if you're going to sleep.
Do I need to install anything or pay?
No. It's 100% free and runs in your browser, with no sign-up. You can add it to your home screen as a shortcut to keep it always within reach.
Are my alarms saved?
Yes, they're saved in your own browser (localStorage). We don't send your data to any server, and they'll still be there next time you visit from the same device.
Why should I allow notifications?
So we can alert you even when you're on another tab. It's optional: without permission, the alarm still rings as long as the site is open.
How do I set an alarm with a loud sound?
When you create the alarm, choose the "Siren" or "Digital" sound and turn up the volume control. The volume rises gradually over the first repetitions to wake you up reliably.
Can I set an alarm that repeats only Monday to Friday?
Yes. When you create the alarm, select the days M, T, W, T, F and leave it enabled: it will ring only on those days and rest on the weekend.
How long should a nap be?
A short nap of 10 to 20 minutes is recommended so you rest without slipping into deep sleep. Use the timer so you don't overdo it and wake up without feeling groggy.
Does it work on mobile and offline?
It works in the browser of any phone or computer. Because it's installable as an app (PWA), once loaded it can open even if your connection is poor.