About CountdownTimerHQ
CountdownTimerHQ is an open, free, high-accuracy countdown timer engineered for focused work, classrooms, sports training, cooking, and productivity.
Our Technology & Accuracy Mission
Unlike conventional browser timers that drift or sleep when tabs are placed in background power-saving states, CountdownTimerHQ uses a dedicated Web Worker thread and the HTML5 Web Audio API to maintain millisecond precision.
Frequently Asked Questions
- Who built CountdownTimerHQ?
- CountdownTimerHQ is an independent free web tool built to provide accurate, reliable countdown timers for everyday tasks like cooking, fitness, meditation, and studying.
- Is CountdownTimerHQ free?
- Yes, completely free. There are no paywalls, sign-ups, or subscriptions. Every feature is available to everyone at no cost.
- What technology powers the timer?
- The timer is built with React, runs entirely in your browser, uses a Web Worker for background-accurate timing, and generates alarm sounds with the Web Audio API.
- Can I use this timer commercially or in classrooms?
- Yes. You can use the timer freely for personal, educational, or commercial purposes such as classroom activities, gym timing, or workplace breaks.
- Do you collect any personal data?
- No. All timing calculations and sounds are processed locally in your browser. The only data stored is your theme preference in local storage.