Timer
Free online Countdown Timer for productivity, cooking, studying, and workouts. Features quick 1m, 5m, 10m, 25m Pomodoro, and 1h presets, Web Audio chime alerts, and background tab drift protection powered by high-precision performance.now() timestamps. 100% private and runs locally in your browser.
Your files never leave your device. All processing happens on your device. No uploads, ever.
How to use Timer
- 1
Set Time or Select Preset
Choose hours, minutes, seconds or click a quick preset like 25 min Pomodoro.
- 2
Start Timer
Click Start to begin countdown with visual progress bar.
- 3
Pause / Resume
Pause anytime or listen for the Web Audio chime when the countdown finishes.
Drift-Free Timestamp Engine
Standard timers slow down when you switch browser tabs due to background throttling. Our timer uses `performance.now()` elapsed timestamp calculations to ensure 100% timing accuracy even when working in other windows.
Pomodoro & Quick Presets
Boost your productivity with built-in presets: 1 minute, 5 minute break, 25 minute Pomodoro focus session, or custom hours, minutes, and seconds.
Frequently asked questions
Will the timer slow down if I switch to another tab?
No! The timer uses hardware `performance.now()` timestamp comparisons so it never loses time or drifts when running in background tabs.
How does the audio alarm work?
The chime uses the browser's native Web Audio API synthesizer. No external audio files are downloaded, making it instantaneous and privacy-friendly.
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Last updated 10 August 2026