⏱️ 时间间隔计算器Time Duration Calculator
计算两个时间或日期时间之间相差多少小时、分钟、秒，或时间加减。Calculate the duration between two times or date-times, in hours, minutes and seconds.
使用说明与常见问题How-to & FAQ
「时间间隔计算器」是什么？What is the Time Duration Calculator tool?
计算两个时间或日期时间之间相差多少小时、分钟、秒，或时间加减。Calculate the duration between two times or date-times, in hours, minutes and seconds.
如何使用「时间间隔计算器」？How do I use the Time Duration Calculator tool?
在「时间间隔计算器」中，填写「开始」、「结束」、「休息分钟」等参数，结果会随输入实时计算并显示在下方。In the Time Duration Calculator: Fill in "Start", "End", "Break (min)"; results are recalculated instantly as you type.
和时区有关吗？Do time zones matter?
「时间间隔计算器」只用你输入的时间计算，不读取设备时间或时区。它不考虑夏令时：如果这段时间跨越了夏令时切换，实际经过的时间会多或少 1 小时。The Time Duration Calculator uses only the times you enter and never reads the device clock or time zone. It does not account for daylight saving time: if the period crosses a clock change, the real elapsed time is one hour more or less.
「时间间隔计算器」免费吗？需要注册吗？Is the Time Duration Calculator free? Do I need an account?
「时间间隔计算器」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Time Duration Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.