Classroom Timer

Interval timer for PE and HIIT

Set work and rest times, the number of rounds and an optional warm-up and cool-down. Beeps and spoken cues tell everyone when to go and when to rest.

Ready

0:00

Warm-up (seconds) Work (seconds) Rest (seconds) Rounds Cool-down (seconds)

Beeps (3-2-1 and changes) Spoken cues (“Round 2. Go!”)

Keyboard: Space start/pause · S skip · R reset · F full screen.

Interval timer presets

Tabata – 20 seconds hard work, 10 seconds rest, 8 rounds (4 minutes).
HIIT 30/30 and 40/20 – classic high-intensity intervals with a warm-up and cool-down.
PE circuit – 45 seconds at each station with 15 seconds to move on.
Class stations – 5 minutes per station with 30 seconds to swap, for carousel activities in any subject.

The screen turns green for work, blue for rest, yellow for the warm-up and purple for the cool-down, so everyone can see what to do from across the hall. Three short beeps count down the last seconds of each part.

More timers

⏱️Classroom timerBig countdown with presets for the board.🐢Fun timersAnimal race, sand timer, traffic light and candle.⏲️StopwatchCount up with laps – great for PE and science.📝Exam timerReading time, extra time and 30/15/5 minute warnings.🍅Pomodoro timerFocus sessions with planned breaks.🔢Multiple timersA separate countdown for every group.🕒Classroom clockBig digital and analogue clock for the room.

Questions

Can I use it for my own workouts?

Of course – it works just as well for home workouts, running intervals and gym sessions as for PE lessons.

Does it work with the screen locked?

Keep the page open: the timer keeps the screen awake on supported devices. Sounds and spoken cues need the page to be open.