Set any countdown from 1 second to multiple hours. Audio alarm fires on completion. Fullscreen display, works instantly in any browser — no download or sign-up needed.
GlowClock's online timer runs entirely in your browser using your device's own clock — no server, no API, no network latency. It is as accurate as your device's system time, which is typically synchronised to internet time servers automatically.
The timer works on any device: desktop, laptop, tablet, phone or smart TV. Press F11 to go fullscreen for a large, room-filling display — used by teachers for classroom activities, trainers for gym intervals and professionals for Pomodoro focus sessions.
Online timers are used across an enormous range of contexts. The most common are study and focus sessions (especially the 25-minute Pomodoro interval), cooking tasks, exercise intervals, classroom activities, meetings, meditation, and general task time-boxing.
Unlike phone timers, a browser-based online timer stays in your working environment — visible on the same screen as your work, without requiring you to pick up your phone.
Yes. Every tool on GlowClock is free with no subscription, no sign-up and no download. The timer, alarm clock, stopwatch and world clock are all accessible at glow-clock.com at no cost.
The timer accepts any number of hours, minutes and seconds — there is no maximum. Enter the hours directly into the hours field for very long countdowns.
Yes. GlowClock works in any mobile browser. Open glow-clock.com in Chrome or Safari on your phone and use the Timer tab. Keep the browser tab open and your screen awake for the alarm to fire reliably on mobile.
A timer counts down from a set time to zero and alerts you — useful when you need to stop at a specific point. A stopwatch counts up from zero — useful when you need to measure how long something takes. GlowClock has both.
You can open GlowClock in multiple browser tabs and run a different timer in each one simultaneously. This lets you track multiple countdowns at the same time.
Free online timer. Any duration. Audio alarm included. No sign-up.
Open Full Timer App