Timers & Clocks
Online alarm clock
Add an alarm, pick the days it repeats, choose a sound. Keep the tab open and it rings on time, with snooze and dismiss.
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No alarms set
Keep this tab open
A web page can only ring while it is open. If you close the tab, quit the browser, or the device sleeps, the alarm cannot sound. When you come back, anything missed by more than ten minutes is listed instead of ringing late. Keep the device plugged in, the volume up, and this tab open; the screen is kept awake while an alarm is set where the browser allows it. For anything you cannot afford to miss, use your phone’s built-in alarm as well.
- Runs in your browser
- No account required
- Free to use
How it works
Checked against the clock every second
Each alarm’s next occurrence is calculated from the calendar in local time, so daylight saving changes land on the right wall-clock time. An alarm rings exactly once per occurrence — the occurrence is recorded the moment it rings.
Honest about sleep and closed tabs
A web page cannot wake a sleeping device or ring after it is closed. If you come back within ten minutes of an alarm, it rings; later than that, it is listed as missed rather than going off long after it was useful.
What it does
Repeating alarms
Once, weekdays, weekends or any set of days.
Snooze and dismiss
Snooze length per alarm, from 1 to 60 minutes.
Sound per alarm
Seven generated sounds, plus volume and a preview in settings.
Screen kept awake
Where the browser allows it, the screen stays on while an alarm is set.
Practical advice
Getting a better result
- Plug the device in and keep this tab open — that is what makes a browser alarm reliable.
- Click anywhere on the page once after opening it, so the browser allows sound.
- For anything you cannot afford to miss, set your phone’s alarm as well.
Questions
Things people ask
Will the alarm ring if my computer is asleep?
No. A sleeping device does not run web pages. When it wakes, an alarm missed by up to ten minutes rings; anything older is listed as missed.
Will it ring if I close the tab?
No — the page has to be open. Your alarms are saved, though, so they are there when you return.
Can I use it as a wake-up alarm?
On a plugged-in device with the tab open and the volume up, yes. The screen is kept awake where the browser supports it. A phone’s built-in alarm is still the more reliable choice for waking up.
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Open toolWho builds these
Free tools by day. Websites that earn their keep by trade.
KuConvert is built by KUDUY, a web design and development agency. From custom WordPress builds to SEO and e-commerce, everything they do is engineered to bring you more qualified traffic and turn it into revenue.
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Custom, conversion-focused web design that captivates visitors and turns them into paying customers. Mobile-first, fast, and built to rank.
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Custom WordPress websites built with clean code, blazing-fast performance (Core Web Vitals optimised), and enterprise-grade security.
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Online stores that convert visitors to customers with seamless shopping experiences.
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Technical SEO, keyword research, on-page optimisation and local SEO strategies that drive qualified organic traffic.
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Data-driven campaigns that deliver measurable ROI across every channel.
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Memorable brand identities that stand out in any market and build lasting trust.
Website Help
One-on-one expert support for bug fixes, updates and ongoing maintenance — without a long-term retainer.
Fixed scope, no surprise invoices
Most sites ship in four to eight weeks with the scope and the price agreed up front.
SEO from day one
Search is designed into the build — structure, schema and Core Web Vitals — not retrofitted.
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Need your whole site to load this fast?
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