Workout Timer App Using HTML, CSS and JavaScript with Source Code

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Welcome to the Workout Timer App – your ultimate fitness companion for high-intensity training! This powerful yet simple timer helps you maximize workouts with customizable intervals, smart progress tracking, and real-time feedback. Whether you're crushing Tabatas, pushing through HIIT circuits, or timing strength sets, our intuitive interface keeps you focused with visual cues, sound alerts, and vibration notifications – all wrapped in a sleek, mobile-friendly design.

Built with pure HTML, CSS, and JavaScript, this app delivers professional-grade functionality without complicated setups. Switch effortlessly between interval, stopwatch, and countdown modes, save preferred workout presets, and even toggle dark mode for low-light training. No downloads, no subscriptions – just instant access to the smartest way to time your fitness journey. Let’s get moving!

You may also check this simple HTML, CSS and JavaScript project:

🔑 Key Features:

✅ Multiple Timer Modes

  • Interval Timer (Work/Rest cycles)

  • Tabata Timer (20s Work / 10s Rest by default)

  • Stopwatch (With lap time recording)

  • Countdown Timer (Customizable minutes & seconds)

✅ Customizable Workouts

  • Adjustable work/rest durations

  • Set number of rounds

  • Quick presets for common workout styles

✅ User Experience Enhancements

  • Progress bar for visual tracking

  • Sound alerts (Bell, Beep, Horn, Chime)

  • Vibration feedback (on supported devices)

  • Dark/Light mode toggle

✅ Responsive Design

  • Works on mobile & desktop

  • Clean, modern UI with smooth animations

🛠 Technologies Used:

  • HTML5 (Structure)

  • CSS3 (Styling, animations, responsive design)

  • JavaScript (Timer logic, interactivity)

  • Font Awesome (Icons)

  • LocalStorage (Saving user preferences)

🚀 How to Use:

1. Select a Timer Mode

  • Choose between Interval, Tabata, Stopwatch, or Countdown.

2. Configure Your Workout

  • Set work/rest times, rounds, or countdown duration.

  • Use quick presets (Tabata, HIIT, AMRAP, EMOM) for convenience.

3. Start, Pause, or Reset

  • ▶️ Start – Begins the timer

  • Pause – Temporarily stops the timer

  • 🔄 Reset – Clears the current session

4. Customize Settings

  • Toggle sound/vibration alerts

  • Switch between dark/light mode

5. For Stopwatch Mode

  • Use Lap to record split times during workouts.

Sample Screenshots of the Project

Landing Page

Dark Mode

How to Run?

  • Download the provided source code zip file.
  • Extract the downloaded zip file.
  • Open the html file and you are now ready to go!

Video Demonstration for Installation/Setup:

Conclusion:

In conclusion, the Workout Timer App combines powerful functionality with sleek design to revolutionize your training sessions. Whether you're a fitness enthusiast, athlete, or coach, this intuitive tool helps you track intervals, monitor progress, and stay motivated with smart audio-visual cues—all built with clean, efficient code for seamless performance across devices. Say goodbye to guesswork and hello to precision timing that keeps you focused on crushing your fitness goals! 🚀💪

Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. After downloading it, you will need a program like Winzip to decompress it.

Virus note: All files are scanned once-a-day by SourceCodester.com for viruses, but new viruses come out every day, so no prevention program can catch 100% of them.

FOR YOUR OWN SAFETY, PLEASE:

1. Re-scan downloaded files using your personal virus checker before using it.
2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.

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