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秒表

精确秒表，支持计圈和导出。

Features

  • Achieve precise time tracking down to the millisecond for highly accurate timing needs.
  • Record unlimited lap times and split times to easily analyze your performance intervals.
  • Export your recorded timing data instantly in CSV or TXT formats for seamless record-keeping.
  • Enjoy a completely free service that requires no downloads, installations, or account sign-ups.
  • Keep your stopwatch running securely in the background even if you accidentally close your browser tab.

How to Use

  1. Click the prominent 'Start' button on the main screen to instantly begin tracking your time.
  2. Select the 'Lap' button each time you want to record a specific interval without stopping the overall clock.
  3. Press 'Pause' if you need to temporarily halt the timer for any unexpected breaks or interruptions.
  4. Click 'Reset' to instantly clear all recorded laps and set the digital timer back to zero.
  5. Choose your preferred file format and click 'Export' to download a complete history of your session.

Frequently Asked Questions

Does the online stopwatch work without an internet connection?

Yes, once the web page is fully loaded in your browser, the stopwatch will continue to function accurately even if you temporarily lose your internet connection.

How do I export my lap times from the stopwatch?

Simply run the stopwatch and record your desired laps, then click the 'Export' button located next to the controls to instantly download your timing data as a CSV or text file.

Is this online stopwatch free to use?

Absolutely. Our online stopwatch is 100% free for both personal and commercial use, and it does not require you to create an account or provide an email address.

Does the stopwatch keep running if I close my laptop or switch tabs?

Yes, the timer runs continuously in the background. If you put your computer to sleep or accidentally close the tab, it will calculate and display the total elapsed time accurately when you return.

Can I use this stopwatch on my mobile phone?

Yes, the tool is fully responsive and optimized for all devices. You can easily use it as a mobile stopwatch on any iOS or Android smartphone browser.