iLoveTimersiLoveTimers.com
5:00
Countdown / Ready
Quick presets
Pick a common duration or enter a custom time below.

Timer settings

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

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

Online Timer

Start a clear countdown with presets, custom time, sound, loop, and fullscreen mode.

Choose the right timer

Online Timer is a flexible everyday starting point with quick presets, custom time entry, optional sound, looping, and fullscreen. Use the Countdown Timer for the definitive general countdown, or the Timer and Stopwatch when you also need elapsed-time mode.

Open Multiple Timers for simultaneous independent countdowns, the Study Timer for a fixed study block, the Pomodoro Timer for repeated work and breaks, or the Clock and Timer when current local time should remain visible.

How it works

Online Timer is a fast, no-setup countdown timer designed for one job: set a time, start the countdown, and keep it readable. Use it in a browser on any device, then switch to fullscreen when you need a big display.

The timer supports quick presets and precise custom entry, so you can go from idea to running countdown in a few seconds. You can keep it simple (tap a 10-minute preset), or be exact when the seconds matter (type 3:30 for 3 minutes 30 seconds).

The main workflow is consistent: set a duration, press Start, and use Pause or Reset whenever you need control. Fullscreen adds a top control strip and a bottom status strip, plus a useful shortcut: in fullscreen you can tap or click the timer area to start or pause without hunting for buttons.

Sound and Loop are optional. Turn Sound on if you need an audible finish cue. Turn Loop on if you want the same interval to repeat automatically, like a repeating 1-minute station timer or a repeating 30-second rest.

1) Set the duration

Choose a preset or type ss, mm:ss, or h:mm:ss, then press Set.

2) Start and control

Press Start (or Space) to run. Press again to pause. Use Reset (or R) to return to the set duration.

3) Sound and Loop

Sound plays a short beep at 0. Loop restarts the same duration each time the timer finishes.

4) Fullscreen

Press Fullscreen (or F). In fullscreen, tap or click the timer area to start or pause quickly.

Examples you can copy

These examples use the same formats you see on screen. If a duration is under an hour, the display reads m:ss. For an hour or more, it reads h:mm:ss.

Scenario A: Presentation segment timing (12 minutes)

You have a 12-minute demo and want a clear room-visible countdown. The key is reducing friction: set, fullscreen, start.

Setup
Tap the 12m preset (or type 12:00 and press Set).
Run
Press F for fullscreen, then press Space to start. If you need to pause mid-demo, tap the timer area once.
Finish
At 0:00, the timer shows Done. With Sound on, you hear a short beep. Press Restart if you want the same 12-minute segment again.
Want a talk-specific layout? Presentation Timer is a better fit when you time multiple segments back to back.
Scenario B: Classroom transition (3 minutes 30 seconds)

You want a short transition timer that is precise enough to keep the pace, but simple enough to restart repeatedly.

Set
Type 3:30 and press Set. The display will show 3:30.
Run
Press Start and keep it visible. If students ask for a brief pause, press Space to pause, then Space again to resume.
Repeat
Press Reset (or R) to return to 3:30 for the next transition. This is faster than re-typing the time each round.
Running a classroom daily? Classroom Timer is tuned for class routines and room-friendly use.
Scenario C: Repeating intervals with Loop (45 seconds)

You are running a repeating station: 45 seconds on, rotate, then 45 seconds again. You do not want to reset and restart manually each time.

Set
Type 45 and press Set. The timer loads 0:45.
Options
Turn Loop on. Keep Sound on if you want a clear end cue each interval.
What you will see
The display runs down to 0:00, beeps (if Sound is on), then instantly restarts at 0:45. That cycle repeats until you pause or reset.
Need structured work/rest rounds? HIIT Timer or Tabata Timer will do that automatically.
Scenario D: Long countdown (1 hour 15 minutes)

You need a long countdown where hours matter, like a study block or a timed practice session.

Set
Type 1:15:00 and press Set. The timer displays 1:15:00.
Control
Use Pause when you step away. Use Reset to return to 1:15:00 without re-entering the time.
Alternative
If you are running repeated focus cycles, a dedicated tool may be easier.
Prefer guided work blocks? Pomodoro Timer or Focus Session Timer may match your workflow better.

Details that prevent mistakes

Editing while running pauses cleanly

If you type into the time box during a run, the timer pauses first. This keeps control predictable: you can adjust the next duration without the timer continuing to drift while you edit.

After you press Set, start again when you are ready.

Fullscreen is designed for quick control

In fullscreen, the timer area itself acts like a control surface: tap or click to start and pause. This is useful when you are presenting, coaching, or moving around a room and do not want to aim for small buttons.

Press Esc any time to exit fullscreen.

Technical notes (timing behavior, audio, fullscreen)
Optional details for troubleshooting and demos
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Display rounding for readability

The time display updates in whole seconds so it stays stable and readable. You will see values like 2:10, 2:09, 2:08, rather than a fast-changing millisecond display.

Audio may require interaction

Some browsers block audio until you interact with the page. If you do not hear the beep, click Start once, confirm Sound is on, check device volume, and make sure the tab is not muted.

Fullscreen behavior varies by browser

Fullscreen uses the browser fullscreen API. Some devices require a direct click to enter fullscreen, and some hide browser UI differently. Esc exits fullscreen on desktop. On mobile, the system back gesture may also exit fullscreen depending on the browser.

Need a different tool? For multiple countdowns use Multiple Timers. For a dedicated big display use Fullscreen Timer. For quiet spaces use Silent Timer.

Keyboard shortcuts

Click the timer card once, then use the shortcuts below. Shortcuts won’t trigger while you’re typing in the time box.

KeyAction
SpaceStart / pause
RReset to the set duration
FToggle fullscreen
EscExit fullscreen
Tip: if shortcuts do nothing, the card probably isn’t focused. Click inside the tool area once (not inside the input), then try again.

Common scenarios

A simple online countdown with presets, custom time, sound, loop, fullscreen mode, and keyboard shortcuts.

Presentations with a big, readable countdown
Set a time fast, go fullscreen, and keep the countdown visible from across the room. Tap/click the timer in fullscreen to start or pause without leaving the big display.
For
Speakers, teachers, and anyone timing a segment with an audience.
Not for
You need a tool tailored to slides, agendas, or speaker workflows. Use Presentation Timer instead.
Presentation Timer →Fullscreen Timer →Meeting Timer →
Classroom transitions and activity timing
Use presets for quick setup, then go fullscreen so the whole room can see the remaining time. Keep Sound on for an end cue, or turn it off for quieter rooms.
For
Teachers, tutors, and facilitators running short activities and transitions.
Not for
You want a classroom-focused layout and wording. Use Classroom Timer instead.
Classroom Timer →Silent Timer →Fullscreen Timer →
Meetings and agenda segments
Time a single agenda item cleanly with start/pause and a quick reset. Fullscreen helps when the timer needs to be visible to everyone in the room.
For
Meeting hosts who want simple countdown timing with minimal setup.
Not for
You want a count-up view (stopwatch style). Use Meeting Count Up Timer.
Meeting Timer →Meeting Count Up Timer →Stopwatch →
Workout intervals that repeat automatically
Set a short interval (like 30s, 45s, or 1m), enable Loop, and let it repeat hands-free. This works well for simple repeating sets.
For
Solo workouts, basic interval timing, and repeating rest periods.
Not for
You want structured rounds, work/rest splits, or presets for training formats. Use HIIT or Tabata instead.
Workout Timer →HIIT Timer →Tabata Timer →Round Timer →
Cooking with a single primary countdown
Use a quick preset or type an exact time for a primary dish. Keep Sound on for an end cue, and go fullscreen if you want a clearer view across the kitchen.
For
Everyday cooking where one timer is enough.
Not for
You need multiple countdowns at once. Use Multiple Timers instead.
Cooking Timer →Egg Timer →Tea Timer →Multiple Timers →
Quiet spaces with visual-only timing
Turn Sound off and rely on the on-screen Done state. Fullscreen can still be useful for visibility without any audio cue.
For
Libraries, shared workspaces, silent classrooms, and muted environments.
Not for
You want a dedicated no-sound experience as the default. Use Silent Timer.
Silent Timer →Study Timer →Focus Session Timer →
Tip: For a shared screen, go fullscreen with F. Use Space to start or pause, and R to reset to the set duration.

Frequently Asked Questions

What is the Online Timer?
Online Timer is a simple countdown timer you can start instantly. It includes quick presets, custom time entry, sound, loop mode, fullscreen display, and keyboard shortcuts.
How do I set the timer duration?
Use a preset (like 5m or 10m), or type a time and press Set. Time entry supports ss, mm:ss, and h:mm:ss.
What formats can I type into the time box?
ss (example 45) = 45 seconds
mm:ss (example 05:00) = 5 minutes
h:mm:ss (example 1:02:30) = 1 hour, 2 minutes, 30 seconds
Note: values over 24 hours are clamped to 24 hours.
How do I start, pause, restart, or reset the timer?
Use Start/Pause to control the countdown. Reset returns the timer to the currently set duration. If the timer is Done, Start becomes Restart.
What happens when the timer reaches zero?
When it hits 0, the timer stops and shows Done. If Sound is enabled, it plays a short beep. If Loop is enabled, it immediately restarts the same duration.
What do Sound and Loop do?
Sound controls whether the timer can beep at the end. Loop repeats the countdown automatically each time it reaches zero.
Why don’t I hear any sound?
Make sure Sound is enabled, your device volume is up, and the tab isn’t muted. Some browsers also require a user interaction before audio can play, so click Start once and try again.
How do I use fullscreen mode?
Click Fullscreen (or press F after clicking the timer card once). Press Esc to exit. In fullscreen you can also tap/click the timer to start or pause.
Why aren’t keyboard shortcuts working?
Click the timer card once to focus it, then try again. Shortcuts are ignored while you’re typing in an input field. In fullscreen, Esc exits fullscreen.
What are the keyboard shortcuts?
Space: start/pause · R: reset · F: fullscreen · Esc: exit fullscreen
Tip: click the timer card once so it captures keyboard input.
Does this timer keep running if I switch tabs?
In normal tab switches, it reconciles remaining time from a real end time instead of only counting interval ticks. Very aggressive power-saving modes, sleeping devices, or paused browser activity can affect what you see until the page resumes.
Which related timer should I use instead?
Want a dedicated big-screen layout? Fullscreen Timer. Timing a talk or lesson? Presentation Timer or Classroom Timer. Need multiple countdowns? Multiple Timers. Want the standard one-off countdown page? Countdown Timer. Prefer no sound? Silent Timer.
Does this tool send my timer data anywhere?
No. The timer runs locally in your browser. This page does not send your timer entries or countdown state anywhere.

Online countdown timer

Presets + custom time • Sound + loop options • Fullscreen big display • Keyboard shortcuts • Tap-to-start in fullscreen

▼
Start a simple countdown fast, then switch to a big fullscreen view when you need distance readability. Use presets for quick setup or type an exact time, then start/pause, reset, loop, and control sound without leaving the page.
Presets + exact time. Pick a quick preset (1–60 minutes) or enter ss, mm:ss, or h:mm:ss.
Start, pause, reset. One-tap controls for normal use, plus a clean restart flow when a timer finishes.
Fullscreen display. Big digits with a minimal top bar and a bottom status strip for presentations, classrooms, and distance viewing.
Sound + loop. Enable a beep when the timer hits 0, or loop to repeat the same countdown continuously.
Tap-to-control in fullscreen. Click or tap the time area to start or pause quickly while staying on the big display.
Keyboard shortcuts. Space start/pause · R reset · F fullscreen · Esc exit fullscreen.
Quick use
  1. 1) Set a time: choose a preset or type mm:ss (or ss / h:mm:ss), then hit Set.
  2. 2) Start: press Start (or Space).
  3. 3) Go fullscreen: hit Fullscreen (or F) for a big display, then tap/click the timer to start/pause without leaving fullscreen.
Best for
  • Presentations: fullscreen timing you can glance at from across the room.
  • Classrooms: quick presets and simple controls for transitions.
  • Work & study: focus blocks with a clean, readable countdown.
  • Workouts: repeat a fixed interval using Loop.
Related tools
Need a dedicated big display page? Fullscreen Timer.
Want something tuned for talks? Presentation Timer.
Running a room? Classroom Timer or Meeting Timer.
Need a completely quiet timer? Silent Timer.
Want more structure (rounds/intervals)? HIIT Timer, Tabata Timer, or Round Timer.
Need multiple countdowns side by side? Multiple Timers.
How it works, shortcuts, and notes▼
Keyboard shortcuts
  • Space: start/pause
  • R: reset
  • F: fullscreen
  • Esc: exit fullscreen

Tip: click the timer card once so shortcuts are captured.

Time entry formats
  • ss (example 45) = 45 seconds
  • mm:ss (example 05:00) = 5 minutes
  • h:mm:ss (example 1:02:30) = 1 hour, 2 minutes, 30 seconds
Behavior notes
  • Editing the time while running will pause cleanly so you can adjust without losing control.
  • When the timer hits 0, it will beep if Sound is on. If Loop is enabled, it restarts the same duration automatically.
  • In fullscreen, you can tap/click the timer to start/pause quickly.
Audio note

Some browsers require a user interaction before audio can play. If you don’t hear the beep, click Start once and try again with Sound enabled.

Tip. For a shared screen, go fullscreen first, then hit Start so the timer is easy to see from a distance. For repeating intervals, enable Loop and set a simple preset (like 1m or 5m).

Choose another timer workflow