Online Stopwatch
Recise stopwatch with lap times. Countdown timer with alarm. Works offline as a Progressive Web App.
Advertisement
About Online Stopwatch & Countdown Timer
Recision stopwatch with split/lap time recording. Countdown timer with audio alarm. Supports Pomodoro technique presets (25 min work, 5 min break). Works offline — pure JavaScript, no server required.
A precise online stopwatch and countdown timer is essential for students, athletes, cooks, and productivity practitioners. The Pomodoro Technique — 25 minutes focused work, 5 minute break — is one of the most evidence-backed productivity methods. This tool supports Pomodoro presets, lap timing for athletes, and custom countdowns for any duration.
How to use
- Enter your values in the input fields — results update instantly as you type.
- No submit button needed. The tool calculates in real time.
- Copy your result or share it via WhatsApp or Twitter using the buttons above.
- Use the workflow links below to chain into related tools for a complete task.
- All processing is browser-only. Nothing you enter is sent to any server.
Tool details
⚡ Next step — complete your workflow
Frequently asked questions
Is this stopwatch accurate?
Uses browsers performance.now() API which provides millisecond precision. Accuracy is limited by browser tab throttling — for professional timing, use a hardware stopwatch.
Advertisement