Ready

5:00

Fullscreen timer presets

Pick a room-display duration or set a custom countdown below.

Timer settings

Set a custom duration, then choose optional sound and loop behavior.

Custom time

SoundLoop

Shortcuts: Space start/pause / R reset / F fullscreen / Esc exit

Fullscreen Timer

Use a big countdown built for classrooms, projectors, smartboards, meetings, and shared screens.

How it works

Fullscreen Timer is built for one job: a big, readable countdown you can put on a projector, smartboard, or second display. You set the duration, press Start, and the screen becomes a clean clock that people can understand instantly from across the room.

The page is intentionally simple. It does not try to teach a method, force a routine, or add extra steps. It focuses on readability, quick setup, and fast control: presets for common lengths, custom input for exact times, optional sound at the end, and loop mode when you need the same interval to repeat.

The display auto-scales the digits to fit the available space, so the time stays large without clipping. Short sessions show a clean minute-and-second format (for example 5:00), and longer sessions naturally switch to an hour format (for example 1:00:00). In fullscreen, you can click or tap the time itself to start or pause, which is ideal when you are standing at the front of a room.

Big digitsPresetsCustom timeSoundLoopFullscreen

Quick use (what most people do)

1) Pick a preset (like 5m, 10m, 15m) or enter a custom time like 7:30.
2) If you want an audible finish, enable Sound. If you need repeating rounds, enable Loop.
3) Press Start (or Space) to begin. Press again to pause.
4) Press Reset (or R) to return to the selected duration.
5) Press Fullscreen (or F) for the large display. Exit with Esc.

What “Reset” means on this page

Reset always returns to the selected duration, not the moment you started. Example: if you set 10:00 and pause at 03:12 remaining, Reset returns to 10:00 so you can rerun the same interval cleanly.

Checklist for projector setups

Set the duration before you go fullscreen, then start when the room is ready.
If you rely on sound, test it once. Some browsers require a user click before audio can play.
Use Loop for stations and rotations so you do not have to touch controls at every reset.
If keyboard shortcuts do nothing, click the timer card once so it has focus. Shortcuts do not fire while typing in the time input.
If you want a “speaker view” timer, use a presentation-specific route instead.

Shortcuts: Space start/pause, R reset, F fullscreen, Esc exit.

What you can do on this page

You can start quickly with presets (1, 2, 3, 5, 10, 15, 20, 25, 30, 45, 60 minutes). Presets are made for common classroom and workshop timings where you want a fast start and minimal setup. If you need an exact duration, use the input. It accepts seconds (for example 90), minutes and seconds (for example 7:30), or hours, minutes, seconds (for example 1:05:00).

Fullscreen mode is display-first. Once you enter fullscreen, the timer becomes the main control surface. You can click or tap the time to start or pause. That matters in real rooms, because the person controlling the timer often is not seated at a keyboard, or is moving between stations. Placeholder ad slots stay outside the active fullscreen view so the countdown remains distraction-free.

Sound is optional and minimal. With Sound on, the timer plays a short finish beep at 00:00. If you are in a quiet environment, keep Sound off and the timer stays completely silent. Loop is also optional. With Loop on, the timer restarts the same duration immediately after it hits zero. This is useful for repeating intervals where the length does not change.

Scenarios with examples (real numbers you will see)

These examples match what the timer shows on screen, including formatting and typical actions like pausing, resetting, and looping. Use them as templates for your own setup.

Scenario 1: Classroom independent work (15 minutes)

A clean, visible countdown so students stop asking “how much time left?”

Setup: - Preset: 15m - Sound: OFF (quiet room) - Loop: OFF What you see: - Start: 15:00 - Midway: 08:47 - Final minute: 01:00 - Finish: 00:00 (silent) Control: - Press Space to pause if you need to address the class - Press R to reset back to 15:00 for another round

Scenario 2: Workshop rotations (7 minutes 30 seconds, looping)

Stations where the same interval repeats automatically

Setup: - Custom input: 7:30 - Sound: ON (audible switch cue) - Loop: ON Cycle behavior: - Start: 7:30 - Finish: 00:00 (beep) - Immediately restarts: 7:30 - Repeats until you pause or turn Loop off Practical outcome: - You do not have to reset between stations - The beep becomes the “rotate now” signal

Scenario 3: Presenter pacing (30 minutes, fullscreen click control)

Run the timer on a second display while presenting

Setup: - Preset: 30m - Fullscreen: ON - Sound: optional What you see: - Start: 30:00 (large digits) - Pause for Q&A: click the time at 12:18 remaining - Resume: click the time again, continues from 12:18 Exit: - Press Esc to leave fullscreen quickly

Scenario 4: Lab timing (1 hour 5 minutes)

Longer sessions display as H:MM:SS automatically

Setup: - Custom input: 1:05:00 - Sound: ON (end signal) - Loop: OFF What you see: - Start: 1:05:00 - Later: 0:42:10 - Final minute: 0:01:00 - Finish: 0:00:00 (beep)

Scenario 5: Micro-sprints (90 seconds, repeated manually)

Fast, repeatable intervals with quick reset

Setup: - Custom input: 90 - Sound: OFF - Loop: OFF Run: - Start: 1:30 - Finish: 0:00 (silent) Repeat: - Press R to return to 1:30 - Press Space to start the next sprint

Scenario 6: Keeping it simple for the room (10 minutes, no typing)

Preset-first workflow

Setup: - Preset: 10m - Sound: OFF or ON - Fullscreen: ON Room experience: - Everyone can read 10:00 at a glance - You can tap/click the time to pause if needed - Press R to restart at 10:00 without re-selecting

Fast control in real rooms

Keyboard shortcuts keep control simple when you are near a laptop or desktop: Space start/pause, R reset, F fullscreen, and Esc to exit. In fullscreen, click or tap the time itself to start or pause without aiming for buttons. If shortcuts do nothing, click the timer card once so it has focus.

Space start/pauseR resetF fullscreenEsc exit

Related tools (same site, different job)

If you need a different timing style, use the closest match below.

Shortcuts: Space R F Esc

Classroom Timer →Presentation Timer →Countdown Timer →Online Timer →Silent Timer →Visual Timer →Multiple Timers →Count Up Timer →

Technical details (timing, audio, fullscreen, background tabs)

Optional notes if you rely on exact behavior

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How remaining time is computed

When you press Start, the page sets an internal end timestamp based on the remaining time. The countdown then recalculates remaining time as (end - now). This reduces drift you can get from “tick once per second” approaches.

Background throttling

Browsers may throttle work in background tabs to save power. The timer will catch up to the correct remaining time when you return, but visual updates can look less smooth while hidden. For the steadiest display, keep the tab visible or use fullscreen on the active screen.

Audio behavior

Sound uses WebAudio. Many browsers block audio until a user gesture (click or tap). If you do not hear the finish beep, click Start once and try again, and check that the tab and device are not muted.

Fullscreen permissions

Fullscreen uses the browser Fullscreen API. Most browsers require a user gesture to enter fullscreen. Exit with Esc or the Exit button in the top bar.

Duration limits and formatting

The timer supports durations up to 24 hours. The display switches formats automatically: shorter times show minutes and seconds (like 12:00), and longer times show hours, minutes, seconds (like 2:00:00).

Need a classroom-first UI? Use Classroom Timer if you want language and defaults tuned specifically for classroom flow.

Need multiple timers? Use Multiple Timers when you want several independent countdowns running at once.

In one sentence: this is a fullscreen timer with huge digits for projectors and smartboards, with presets, custom time input, optional sound, loop mode, and fast control via click/tap or keyboard shortcuts.

Need a fullscreen clock instead of a countdown? Use the smooth second hand clock for an analog face, or the clock with milliseconds for a large digital display with milliseconds.

Keyboard shortcuts

Click the timer card once, then use the keyboard to control it. Shortcuts won’t trigger while you’re typing in an input, select, textarea, or editable field.

Key	Action
`Space`	Start / pause the countdown
`R`	Reset back to the selected duration
`F`	Toggle fullscreen
`Esc`	Exit fullscreen

Tip: if shortcuts do nothing, the timer card probably isn’t focused. Click the card once, then try again.

Common scenarios

Use this page for a big, readable countdown on a projector or second display. Pick a preset or set a custom time, then go fullscreen and click/tap the time to start or pause.

Projector / smartboard countdown (big digits for the room)

Run a large, readable countdown that fills the screen. Great for classrooms, workshops, labs, and shared spaces where everyone needs to see the time.

For

Teachers, presenters, facilitators, and anyone projecting the timer to a group.

Not for

You want an on-screen progress visualization (like a shrinking bar/wedge). Use Visual Timer instead.

Classroom Timer →Visual Timer →

Quick preset countdown (1–60 minutes, fast start)

Pick a preset, press Start, and you’re done. Presets are the fastest way to run common lengths without typing.

For

Anyone who needs a simple countdown for tasks, stations, or timeboxing.

Not for

You need a structured work/break cycle that repeats. Use Pomodoro Timer instead.

Countdown Timer →Pomodoro Timer →

Custom time for exact schedules (mm:ss or hh:mm:ss)

Type an exact duration like 7:30, 12:00, or 1:00:00, then Set. Useful for planned activities, drills, and timed segments.

For

People running agendas, timed activities, or precise segments.

Not for

You want multiple independent timers running together. Use Multiple Timers instead.

Online Timer →Multiple Timers →

Loop mode for rotations (repeat the same interval)

Enable Loop so the timer restarts automatically at zero. Good for stations, group rotations, and repeating rounds with the same length.

For

Class rotations, circuit work, facilitation, and repeated timed rounds.

Not for

You need interval programming with work/rest rounds. Use HIIT or Tabata instead.

Round Timer →Tabata Timer →

Silent or no-audio environments

Keep Sound off for a fully silent countdown. If you want a dedicated no-audio route, use Silent Timer.

For

Libraries, shared offices, meetings, and quiet classrooms.

Not for

You rely on an audible end signal. Turn Sound on (and interact once if the browser requires it).

Silent Timer →Meeting Timer →

Track elapsed time instead of remaining time

If you need to show how long something has been running (not how long is left), use a count-up timer.

For

Meetings, labs, and activities where elapsed time matters more than a fixed endpoint.

Not for

You need a hard stop and a visible finish. Use this fullscreen countdown instead.

Count Up Timer →Stopwatch →

Tip: Press Space to start/pause, R to reset, F for fullscreen, and Esc to exit. If shortcuts do nothing, click the timer card once to focus it.

Frequently Asked Questions

What does this Fullscreen Timer do?

It runs a simple countdown with huge digits designed for projectors, smartboards, classrooms, and second displays. Choose a preset or set a custom time, start/pause, optionally enable sound, turn on loop mode to repeat, and use fullscreen with click/tap control.

How do I set the timer length?

Choose a preset (1m to 60m) or type a custom time in the input. You can enter seconds (ss), minutes:seconds (mm:ss), or hours:minutes:seconds (hh:mm:ss). Press Set or click out of the input to apply it.

How do Start, Pause, and Reset work?

Start begins counting down from the current remaining time. Pause stops the countdown and keeps your remaining time. Reset stops the timer and returns the remaining time to the selected duration.

Can I control the timer by clicking the display?

Yes. In fullscreen mode, click or tap the big time display to start or pause. This is meant for projector setups where you want minimal controls on screen.

What keyboard shortcuts are supported?

Space start/pause · R reset · F fullscreen · Esc exits fullscreen. If shortcuts don’t work, click/tap the timer card once so it has focus.

How does fullscreen mode work?

Click Fullscreen (or press F). Press Esc or the Exit button to leave fullscreen. In fullscreen, the page shows a minimal top bar and you can click/tap the timer display to start or pause.

Do ads appear in fullscreen?

No. Placeholder ad slots stay outside the active fullscreen timer view so the fullscreen countdown remains focused on the display and controls.

What do Sound and Loop do?

Sound plays a short beep when the countdown completes. Loop automatically restarts the same duration when it reaches zero (useful for stations, rotations, and repeated rounds).

I don’t hear any sound. What should I do?

Some browsers block audio until you interact with the page. Click Start once (or press Space) and make sure your tab and device are not muted. If you still don’t hear beeps, try toggling Sound off and on.

What happens if the tab stutters?

The countdown is anchored to an absolute end time and recalculates remaining time from your device clock. That helps normal tab switches and small rendering pauses, but sleeping devices or aggressive power saving can still affect what you see until the page resumes.

Is there a maximum timer length?

This timer supports durations up to 24 hours.

Which related tool should I use instead?

For classroom-specific workflows, use Classroom Timer. For presentation pacing, use Presentation Timer. For a general-purpose countdown (not focused on fullscreen), use Countdown Timer. For a no-audio page, use Silent Timer. For several timers at once, use Multiple Timers.

Fullscreen Timer at a glance

Big projector-friendly countdown • Presets + custom time • Tap-to-start in fullscreen • Optional sound • Loop mode • Keyboard shortcuts

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Use this page when you need a huge, readable countdown on a projector, smartboard, or second display. Start with a preset or set an exact time, then go fullscreen for a clean big-digit view.

Big digits. The time auto-scales to fill the screen without clipping, so it stays readable from across a room.

Fast setup. Pick a preset (1m to 60m) or type mm:ss, hh:mm:ss, or seconds.

Tap-to-control. In fullscreen, click/tap the timer display to start or pause without hunting for buttons.

Sound + loop. Optional finish beep, and Loop to repeat the same countdown for stations, rounds, or classroom rotations.

Keyboard shortcuts. Space start/pause · R reset · F fullscreen · Esc exit fullscreen. Click the timer card once if shortcuts do not respond.

Quick reset. Reset returns to your chosen duration. Presets are disabled while running to avoid accidental changes mid-countdown.

Quick use

1) Set time: choose a preset or type mm:ss.
2) Start: press Start or hit Space.
3) Fullscreen: press F (or tap Fullscreen). In fullscreen, click the time to start/pause.

Common uses

Classroom timer: keep students synced during independent work.
Presentation pacing: visible countdown on a second display for speakers.
Stations / rotations: enable Loop for repeating intervals.
Exam / quiz countdown: big digits, minimal distractions.

Related tools

Need a classroom-focused page? Classroom Timer.

Timing a talk or meeting? Presentation Timer or Meeting Timer.

Want a simple non-fullscreen countdown? Online Timer or Countdown Timer.

Need a completely silent display? Silent Timer.

Multiple timers on one screen? Multiple Timers.

Behavior details (fullscreen, sound, shortcuts)▼

Fullscreen behavior

In fullscreen, a top bar appears with Exit (Esc). You can also click/tap the time to start or pause quickly.

Keyboard shortcuts

Space start/pause · R reset · F fullscreen · Esc exit fullscreen.

If shortcuts do not work, click/tap the timer card once so it has focus.

Sound notes

Sound uses WebAudio. Some browsers require a user action before audio can play, so if you do not hear the finish beep, click Start once and try again.

Loop mode

With Loop on, the timer automatically restarts the same duration when it reaches zero. Turn Loop off to stop at Done.

Input formats

You can type seconds (e.g. 90), minutes:seconds (e.g. 5:00), or hours:minutes:seconds (e.g. 1:00:00).

Tip. If you are using sound, keep the tab unmuted and start the timer with a click/tap at least once so your browser allows audio.