Large customizable countdown

Fullscreen Countdown Screen

Set a countdown from one second to 23 hours, 59 minutes and 59 seconds, then display it with a clear progress bar. Use a preset or enter an exact duration and style the screen for the room.

Maximum: 23:59:59
Presets: 1, 5, 10, 25 and 60 minutes
Controls: Start, pause and reset
Style: Colors, gradient and shadow

Set up a Fullscreen Countdown Screen

Set the duration and appearance before opening fullscreen so the audience sees only the timer.

Choose a duration

Use a preset or enter hours, minutes and seconds for the exact session.

Set the design

Pick background, gradient, text and accent colors, then adjust the number shadow.

Start and pause

Start the clock, pause without losing the remaining time, or reset to the chosen duration.

Open fullscreen

Expand the large digits for a class, meeting, workout or event.

Choose a timer people can read

High contrast numbers and a restrained background work best at distance. The accent color controls the progress bar, while the shadow changes the glow around the main time display.

The timer uses the browser's performance clock and recalculates from a deadline while running. Background tabs and device power management can still affect what is visible, so do not use it as the only timing source for a critical process.

Use presets as starting points

One and five minutes suit short turns. Ten minutes works for a focused task, 25 minutes for a common work interval and one hour for a longer session. Custom fields cover durations between those choices.

For measuring time upward and recording segments, use the Stopwatch. Open Black Screen when the display should remain blank after the timer.

Countdown and style controls

Time and appearance settings remain available until fullscreen begins. The timer-row Reset restores the chosen duration; the bottom Reset returns the whole tool to five minutes and its default style.

Time fields

Accept hours from 0 to 23 and minutes or seconds from 0 to 59. Editing a time field stops the current countdown and sets the new duration.

Progress bar

Shrinks in proportion to the time remaining from the selected starting duration.

Gradient

Uses two background colors when enabled or the first color as a solid field when disabled.

Shadow

Adjusts the glow around the large timer text from 0 to 64 pixels.

Important: Browser timers can be affected by sleep, background throttling or device load. Use approved timing equipment for exams, safety procedures or regulated events.