Ready?
Space start / pause · R reset · F full screen
Presets
Recently used
Online Interval Timer
Set the work time, rest time and number of rounds. The timer counts them down in turn, beeps for the last 5 seconds of every phase and signals each change.
- Set work and rest – Type the work and rest time in seconds and the number of rounds, or pick a preset below. Tick “Repeat” for an endless loop.
- Start – Click Start or press Space. The current phase and round number show above the clock, and a short beep sounds during the last 5 seconds of every phase.
- Finish – After the last round the alarm chosen in Configure plays. Pause stops the countdown, Reset returns to the settings.
The timer keeps working in a background tab and after a page reload. Sounds are generated in the browser; in Configure you can pick the final alarm, your own file or a YouTube video. Shortcuts: Space start/pause, R reset, F full screen.
Frequently asked questions
What is Tabata?
A protocol of 8 rounds of 20 seconds of intense work and 10 seconds of rest, 4 minutes in total. The “Tabata 20/10 × 8” preset is ready to use.
Can the rest be 0 seconds?
Yes. The timer then moves straight to the next work round with a change signal, for example for EMOM training.
Can I change the work time mid-session?
Stop the timer with Reset, adjust the values and start again. The fields are hidden while counting so nothing changes by accident.