Stopwatch Countdown
Stopwatch and countdown timer with lap recording
Stopwatch Countdown is a free online Calculators tool. Stopwatch and countdown timer with lap recording Related terms: 秒表 · stopwatch · 倒计时 · countdown · 计时 · 正计时. Use it on this page without signing in.
计时基于 Date.now() 时间差，切换标签页或最小化窗口后仍保持准确。
使用说明
- 秒表模式：开始/暂停/计圈/重置，精确到毫秒
- 倒计时模式：设置时分秒，到点提醒
- 计圈记录每圈用时与总用时
- 支持标签页后台计时，到点声音提示
常见问题
- 精度：基于浏览器高精度计时器（performance API）
- 后台计时：切走后仍持续，回到页面同步显示
- 倒计时结束：播放提示音并可循环
- 适合运动计时、演讲控时、烹饪等场景
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FAQ about Stopwatch Countdown
What can Stopwatch Countdown do?
Stopwatch Countdown is a Calculators tool. Stopwatch and countdown timer with lap recording You can finish the job on this page.
Who should use Stopwatch Countdown?
Anyone handling 秒表 · stopwatch · 倒计时 · countdown · 计时 · 正计时 who does not want to install desktop software can use Stopwatch Countdown in the browser.
Is Stopwatch Countdown safe? Is my data uploaded?
This tool runs in your browser. We do not collect the content you enter into Stopwatch Countdown just because you used it.
What similar tools exist?
Related tools in the same Calculators group are listed at the bottom of this page.