Free Interval Timer

Why use an interval timer for classroom?

Station rotations, PE circuits, and timed practice drills all depend on precise, repeating intervals. An interval timer for classroom use automates the schedule so you can focus on teaching instead of watching the clock. Students hear the signal, rotate, and keep moving — no downtime, no confusion about when to switch.

How this interval timer works

Choose a work duration, a rest or transition duration, and the number of rounds. Press Start and the timer moves through every work/rest round automatically, with a clear chime at each transition. The display always shows the current phase and round, and the sequence stops when the selected rounds are complete.

Interval timer vs. a regular countdown timer

A standard countdown timer handles one block of time. An interval timer chains multiple blocks together with automatic transitions. That matters when you have four reading stations or a six-exercise PE circuit — you would need to manually reset a regular timer every few minutes. The interval timer does it for you, keeping the flow uninterrupted.

Tips for effective use

• Use the rest duration as a short buffer between stations for physical movement.
• Keep all work intervals the same length so rotations feel predictable to students.
• Project the timer on the board so students can see the current phase, round, and time left.
• Write the station order on the board before starting, because this timer manages work/rest rounds rather than named stages.

Share to Google Classroom

Click the Share to Google Classroom button to post a link to the interval timer. Each student can then choose their own work, rest, and round settings for independent practice.