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Online 15 minutes countdown timer. Starts automatically with 15 alarm sounds to choose from. Fullscreen mode for classrooms and big screens.
This 15 minutes countdown timer starts automatically. When the time is up, you'll hear an alarm sound. Keep this browser tab open and your volume turned up.
A 15-minute timer is a quarter-hour — perfect for presentations, classroom activity segments, workout circuits, and the 'two-minute rule' taken further into a focused work block.
A 15 minutes timer is great for presentations, classroom sessions, workout circuits, or cooking tasks. Choose from 15 alarm sounds including loud fire alarms and sirens, adjust how long the alarm rings, and customize the display with 60+ fonts and multiple color themes. Hit fullscreen to use it on a big screen, projector, or classroom TV.
The timer starts counting down as soon as this page loads. When it reaches zero, your selected alarm sound plays. You can pause, resume, or reset the timer at any time using the controls. To change the alarm sound, click the sound icon and choose from options like Classic Bell, Fire Alarm, Radar Ping, Rooster, and more. Adjust the ring duration from 30 seconds up to 10 minutes depending on how loud and long you need it.
Timers in the 15 minutes range are ideal for focused activities where you need to be fully present. Consider going fullscreen and placing your device where it's visible — like a classroom TV or desk monitor. The visual countdown creates a healthy sense of urgency that helps maintain momentum without causing stress.
No app or download needed — works instantly in any modern browser on phones, tablets, laptops, and desktops. Bookmark this page to quickly return to your 15 minutes timer anytime. You can also share this timer with others using the share button — they'll get the exact same timer with your settings.
Need a different kind of timer? Try the Pomodoro Timer for structured work sessions with automatic breaks, the Interval Timer for HIIT and circuit training, or the Classroom Timer for visual countdowns with fun animations. For tracking multiple things at once, use Multiple Timers.