RayLabs Tabata Workout Timer
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WORKSet 1 / 8
04:00
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HIIT Protocol

Free Online Tabata Timer

20s High-Intensity Work & 10s Rest Interval Automation

A high-energy interval training timer engineered for the classic 20-second work and 10-second rest Tabata protocol. Features automated round tracking, distinct 3-2-1 audio beeps, and bold color-coded screen transitions.

Automated 20/10 Work & Rest Cycles

Hands-free interval switching between 20-second maximum effort sprints and 10-second rest recovery periods across 8 complete sets.

High-Contrast Color Coding

Vibrant Emerald Green illuminates during WORK intervals, instantly switching to energetic Crimson Red during REST intervals for unmistakable peripheral visibility.

High-Energy 3-2-1 Audio Beeps

Distinct acoustic countdown beeps alert you three seconds before every transition, so you never need to look down at your screen while exercising.

Live Set & Round Counter

Bold round indicators (e.g. Set 3 of 8) keep you motivated and aware of remaining intervals through your final sprint.

The Science of the Tabata Protocol

Maximizing aerobic and anaerobic power in just 4 minutes.

1

Warm Up & Prepare Equipment

Spend 3 to 5 minutes mobilizing joints and elevating heart rate. Pick bodyweight movements or weights (burpees, squats, kettlebell swings).

2

Sprint for 20 Seconds (WORK)

Push with 100% all-out effort as the timer glows green. Move with power and good form until the rest horn sounds.

3

Recover for 10 Seconds (REST)

Breathe deeply and catch your breath as the screen transitions to red. Prepare for the next round during the 3-2-1 beep.

4

Complete 8 Rounds (4 Minutes Total)

Maintain intensity across all 8 rounds. Finish with a gentle cooldown and hydration.

Keyboard Ergonomics

Full hands-free control via keyboard shortcuts

Space Start or pause countdown
R Reset timer
F Toggle fullscreen stage
+ / − Adjust duration by 1m
M Toggle audio & chimes
B Feed mascot / confetti treats
E Toggle draggable layout mode
C Open audience cheer drawer
Esc Dismiss dialogs & modals

Frequently Asked Questions

What is the 20/10 Tabata method?
Formulated in 1996 by Dr. Izumi Tabata at the National Institute of Fitness and Sports in Tokyo, the protocol alternates 20 seconds of ultra-intense exercise with 10 seconds of rest for 8 continuous cycles (4 minutes total), providing proven aerobic and anaerobic conditioning.
How many rounds are in a standard Tabata workout?
A standard Tabata round consists of 8 intervals of 20 seconds work and 10 seconds rest, adding up to exactly 4 minutes.
Can I customize the work and rest intervals for HIIT?
Yes. Our preset bar includes standard 20/10 Tabata, 30/15 HIIT, 60s EMOM (Every Minute on the Minute), and 2-minute quick Tabata options.
Does the timer play sounds before transitions?
Yes. The HIIT audio engine sounds three crisp warning beeps at 3, 2, and 1 seconds before every interval switch, followed by a distinct high-frequency tone when the phase begins.
Does the timer keep my phone screen awake?
Yes. When active, the application requests the modern Screen Wake Lock API to prevent mobile phones and tablets from dimming or locking during your workout.

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