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Interval Timer

Alternate work and rest intervals for HIIT, Tabata-style training, and circuit rest.

WORK

Round 1 / 8

00:40

How to use

Set work seconds, rest seconds, and number of rounds. The timer switches phases automatically and beeps on each change.

FAQ

  • Default Tabata? Preset is 40s work / 20s rest × 8 — edit fields for your protocol.
  • Skip rest? Set rest to a minimum value if you need shorter gaps.
  • Warm-up? Run a separate countdown before starting intervals.
  • Track heart rate? Pair with heart-rate zone tools for intensity targets.