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