TinySandyFree Online Tools

Interval Timer

Alternate between work and rest for workouts, stretching or study without watching the clock. Set a get-ready countdown, the length of each work and rest period and the number of rounds, or start from a Tabata or HIIT preset. The phase name changes colour and wording, and optional beeps mark each change and the final three seconds.

Timers & Clocks Runs in your browser

Set Up Your Intervals

Keep this tab open while training. Beeps are off until you tick the sound option.

0 for no rest.

Ready

Total time: –

How to Use the Interval Timer

  1. Choose a preset or enter your own get-ready, work, rest and round values.
  2. Tick the beep option if you want sound cues, then press Start.
  3. Follow the phase name: GET READY, WORK or REST. Pause pauses and resumes.
  4. When all rounds are done you see and hear “Finished”. Reset to start again.

About This Tool

People doing HIIT, Tabata, circuit training or physiotherapy exercises, and students using timed study sprints.

Input: Work, rest and rounds  ·  Output: Timed intervals.

Features and Limitations

Features

  • Presets for Tabata, HIIT, every-minute training and study sprints.
  • Large phase label in words as well as colour, with remaining time and round number.
  • Opt-in beeps: one at each change, short ticks in the last three seconds.
  • Total session length calculated before you start.

Limitations

  • Keep the tab open and the screen awake during your session.
  • Sounds may be delayed if the browser puts a background tab to sleep.
  • Results are computed in your browser; nothing you enter is sent to a server.

Example

Tabata preset: 10 s get ready + 8 × 20 s work + 7 × 10 s rest = 4 minutes exactly, because the rest after the last round is skipped.

Frequently Asked Questions

What is Tabata?

A high-intensity protocol of 8 rounds of 20 seconds all-out effort and 10 seconds rest, 4 minutes in total.

Is the rest after the final round included?

No. The session ends straight after the last work period, so the total time is shorter by one rest.

Can I use it for things other than exercise?

Yes. Set long work and rest periods, for example 25 minutes and 5 minutes, for study or chores.

Related Tools

More like this: all Timers & Clocks tools, all Productivity tools or the TinySandy home page.