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workout-timer

A workout timer tracks intervals — work and rest periods — for HIIT, Tabata, circuit training, EMOM (every-minute-on-the-minute), and similar interval-based workouts. The ZTools Workout Timer runs in the browser with audio cues at start, transitions, and finish. Configure work duration, rest duration, number of rounds, prep countdown, and round-of-N. Supports fullscreen for studio / gym use, persists settings across sessions, and works offline once loaded.

Use cases​

Tabata workout (8 rounds × 20s work + 10s rest)​

Classic 4-minute Tabata. Tool counts down each interval with audio cues.

HIIT (30s work / 30s rest × 10)​

10-minute HIIT session. Tool tracks total time + current round.

Circuit training (5 stations × 45s work + 15s rest, 3 rounds)​

Full circuit with multi-round structure.

EMOM (every-minute-on-the-minute, 20 rounds)​

Minute-based intervals. Audio at top of each minute.

How it works​

  1. Configure intervals — Work duration (1-300s), rest duration (0-300s), rounds (1-50), prep countdown (3-10s).
  2. Pick preset — Tabata, HIIT, EMOM, circuit, custom.
  3. Start — Audio "GO!" at start; warning beeps at 3-second countdown to transition; "REST!" at end of work; "GO!" at next round.
  4. Track — Display: current round, current phase (work/rest), time remaining, total elapsed, total remaining.

Examples​

Input: Tabata: 20s work / 10s rest × 8 rounds

Output: 4-minute total. Tool counts each round; audio at every transition.

Input: EMOM 20 minutes

Output: Audio at top of every minute. Display shows current minute / 20.

Frequently asked questions​

Will audio play if my screen is off?

Some browsers throttle background tabs after a few minutes. For reliability, keep the tab in the foreground.

Custom workout sequences?

Yes — chain different interval blocks together (e.g. warmup → Tabata → cooldown).

Spotify / music integration?

No — tool is timer-only. Run your music separately and put both on speakers.

Privacy?

All client-side.

Tips​

  • For Tabata (30 years of evidence), strict 20/10 × 8 — total 4 min. Don't add extra rest; the discomfort is the training.
  • For HIIT, work-to-rest ratio matters: beginners 1:2, intermediate 1:1, advanced 2:1.
  • Always include 5-10 min warmup before HIIT — cold starts injure.
  • Audio reliability matters mid-workout — keep tab in foreground.

Try it now​

The full workout-timer runs in your browser at https://ztools.zaions.com/workout-timer — no signup, no upload, no data leaves your device.

Open the tool ↗

Last updated: 2026-05-06 · Author: Ahsan Mahmood · Edit this page on GitHub