Classroom Timer
A large-screen countdown, stopwatch, activity sequence and Pomodoro timer.
Ready
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Space: Start/Pause · R: Reset · F: Fullscreen · M: Sound · ↑/↓: ±1
How to Use the Classroom Timer
Choose Countdown for a fixed classroom task, Stopwatch when the finishing time is open, Activity Sequence for a lesson with several stages, or Pomodoro for alternating work and breaks. Enter an optional title such as Silent Reading, select a duration and press Start. The display uses large responsive digits and a circular progress ring so students can understand the remaining time from across the room.
Classroom Examples
Use a short countdown for instructions, ten minutes for silent reading, a longer block for an exam, or the stopwatch for student presentations. Activity Sequence can move a lesson from reading to group discussion and then presentations without rebuilding each timer. Pomodoro mode helps older students divide independent work into focused sessions and planned breaks.
Fullscreen on an Interactive Whiteboard
Open fullscreen mode before class begins. The title, current stage and essential controls remain visible, while controls fade after inactivity and return with pointer movement. Keyboard shortcuts let a teacher pause with Space, reset with R, enter fullscreen with F, mute with M, or adjust one minute with the arrow keys. The timer uses the actual target time, so switching tabs does not create interval drift.
Privacy and Saved Settings
Settings remain in local browser storage and are not uploaded. A sequence can be saved in the URL hash, making it easy to bookmark a recurring lesson plan. For other classroom tasks, try the seating plan, name wheel, or group generator.
Planning Better Timed Activities
Tell students what should be finished before starting the clock. A visible title and a realistic duration make the display a shared classroom cue rather than a source of pressure. For younger groups, begin with generous blocks and use the color change as a calm reminder. During an exam, mute intermediate alerts if sound could interrupt concentration. During a discussion, keep the final alert on so every group receives the same amount of time.
Activity Sequence is especially useful for repeated lesson structures. A literacy lesson might include ten minutes of reading, eight minutes of partner discussion and five minutes of reporting. A science activity can move from setup to observation, cleanup and reflection. Save the generated link in lesson notes so the sequence opens with the same stage names and durations next time.
Countdown, Stopwatch or Pomodoro?
Countdown is best when the teacher sets a clear deadline. Stopwatch is useful when recording how long a presentation, experiment or transition actually takes, and lap records can compare several attempts. Pomodoro supports independent revision: learners work for a focused period, take a planned break and repeat for the selected number of rounds. The modes share the same readable display and controls, so students do not need to learn a new interface for every activity.
Frequently Asked Questions
Is the classroom timer free?
Yes. No account or payment is required.
Does it work on an interactive whiteboard?
Yes. Fullscreen mode and large digits are designed for classroom displays.
Does time drift in a background tab?
No. Remaining time is recalculated from the actual target time.
Are settings uploaded?
No. Settings stay in local browser storage.
Can alerts be muted?
Yes. You can mute alerts and change their volume.