Timer tools
Choose the right timer tool for the activity
Start a custom interval, HIIT or Tabata session here. This dedicated timer category also leaves room for future interactive tools.
Fun Timers
Choose bomb, rainbow, sand, traffic light, candle, egg or popcorn countdowns for visual classroom activities.
Explore visual classroom timers →Exam Timer
Run SAT, GRE, IELTS or custom multi-section sessions with exam timer section labels, a chime at every change, and a clear completion signal.
Open exam timer →Pomodoro Timer
Focus sessions, timed breaks and a longer rest after each set.
Start focusing →Interval Timer
Create custom work and rest rounds with warm-up, cool-down, alerts, full screen, and a clear round counter.
Open the interval timer →HIIT Timer
Start 40/20, 30/15 or 45/15 high-intensity intervals with recovery labels and a 10-second warning.
Open the HIIT timer →Tabata Timer
Run the classic 20 seconds work, 10 seconds rest and 8-round Tabata timer in full screen.
Open the Tabata timer →
Classroom tools
Clocks and timing displays for the classroom
Open a digital clock, flip clock, stopwatch or world clock when a lesson needs a clear shared time display.
Digital Clock
Open a free online digital clock with full screen, optional seconds, and day/date for classroom or desk displays.
Open the digital clock →Flip Clock
Open a free online flip clock with full screen and optional seconds when the class needs the current time rather than a countdown.
Open the flip clock →Stopwatch
Open a free online stopwatch with laps and centisecond precision for drills and study timing.
Open the classroom stopwatch →World Clock
Open a fullscreen world clock with a live map to compare city times for remote and international classes.
Open the world clock →
Free online classroom timer
Classroom Timer for teaching, activities, and exams
ClassroomTimers is a free online classroom timer with large, projector-ready digits—no account or download required. Choose a 5–60 minute preset or edit the duration, then run full screen with wake lock and a clear finish warning.
Maintained by the ClassroomTimers team ·
Online · Free · Screen-ready
Classroom countdown timer for screens, not tiny browser widgets
ClassroomTimers is a free classroom countdown timer built for screens, not tiny browser widgets. It shows large digital digits, visual progress, and full-screen mode readable from the back row. Optional end tones mark time's up; it does not play continuous background music.
Why ClassroomTimers
Why teachers choose this Classroom Timer
ClassroomTimers is a classroom timer shaped for teaching—not a generic countdown with tiny digits behind ads. It stays readable from the back row, calm enough for focused work, and unmistakable when time is up.
Built for teachers and trainers
Use it for group work, presentations, independent practice, quizzes, and exams without switching tools mid-lesson.
Made for classroom screens
Large tabular digits, full-screen mode, and wake lock keep the countdown visible on projectors, TVs, and interactive boards.
Different from a generic countdown
Minute-based classroom timer presets, local privacy, timestamp-based accuracy, and an unmistakable finish state matter more than decorative widgets.
Classroom Timer use cases
Group discussions
Give every group the same visible deadline and pause or resume without interrupting the activity.
Student presentations
Keep speaking turns fair with a Classroom Timer that remains readable on a projector or interactive board.
Independent work
Set a calm time boundary for reading, writing, quizzes, exams, and focused practice.
Features
Clear Classroom Timer features for every class
Full-screen classroom screen timer
Remove navigation and distractions so the countdown remains the classroom focal point.
Keep the screen awake
Prevent supported devices from sleeping during longer classroom activities.
Classroom timer presets by minutes
Open common lesson lengths instantly with dedicated 5, 10, 15, 20, 25, 45, and 60 minute Classroom Timer pages.
Clear completion state
A final 10-second warning, visible status, and optional end tones make the ending unambiguous—without continuous playlist music.
Accurate in background tabs
Timestamp-based timing corrects itself after browser throttling or switching tabs.
How to use the Classroom Timer
- 1
Choose a classroom timer preset
Open a 5, 10, 15, 20, 25, 45, or 60 minute Classroom Timer from the preset row.
- 2
Edit the duration
Select Edit time inside the circle, use the hour, minute, and second wheels, then confirm.
- 3
Start the countdown
Select Start when the class is ready. Presets disappear so the active Classroom Timer stays clear.
- 4
Pause or reset
Pause when the activity is interrupted, resume from the same point, or cancel to return to setup.
Classroom Timer FAQ
- Do I need an account to use the Classroom Timer?
- No. The Classroom Timer works immediately in your browser without registration or installation.
- Is this a free online Classroom Timer?
- Yes. You can run this free online classroom countdown for lessons, activities, and exams without paying or creating an account.
- Do I need to download a classroom timer app?
- No. ClassroomTimers runs in the browser. Open the page on a laptop, tablet, or classroom computer and use full screen when you need a classroom screen timer.
- Does the Classroom Timer play music the whole time?
- No. It does not stream continuous classroom timer music. You can optionally enable short end tones when time is up.
- Will the countdown stay accurate in a background tab?
- Yes. It calculates remaining time from an absolute timestamp instead of accumulating animation frames.
- Can I use this Classroom Timer on a projector or classroom display?
- Yes. The large high-contrast digits and full-screen mode are designed for projectors, televisions, and interactive boards.
- Are classroom labels or timer activity uploaded?
- No. The current timer session runs locally in your browser. ClassroomTimers does not require an account and does not upload your timing activity.