ChronoTrack delivers millisecond-accurate timing for athletes, developers, and productivity enthusiasts who refuse to settle for less.
Millisecond precision. Zero distractions.
No laps recorded yet
Every feature crafted with purpose and precision.
Powered by the browser's high-resolution timer API for sub-millisecond precision that professional athletes and developers demand.
Capture as many split times as you need. Each lap shows elapsed time and the delta from the previous lap — perfect for interval training.
Works flawlessly on every screen — from 4K monitors to pocket phones. Optimized touch controls and adaptive layout for any device.
Zero dependencies, no frameworks. Pure HTML, CSS, and JS that loads in milliseconds and runs offline. No installs, no sign-ups.
Everything runs locally in your browser. No data is ever sent to any server. Your timing sessions remain completely private.
Designed from the ground up for dark environments. Easy on your eyes during late-night sessions, marathons, and focused work blocks.
ChronoTrack was built on a simple belief: measuring time shouldn't require an app download, a subscription, or a complicated interface. Whether you're a marathon runner tracking splits, a developer benchmarking code, or a student managing study sessions — you deserve a tool that's as fast as your ambitions.
We obsessed over every pixel, every millisecond, and every interaction to deliver the cleanest, most accurate stopwatch on the web. No noise. No bloat. Just time.
performance.now()
Questions, feedback, or just want to say hi? We'd love to hear from you.