💼 工作日计算器Business Days Calculator
计算两个日期之间的工作日天数（排除周末和自定义节假日），或某日期加 N 个工作日。Count working days between dates (excluding weekends and custom holidays), or add N business days.
使用说明与常见问题How-to & FAQ
「工作日计算器」是什么？What is the Business Days Calculator?
计算两个日期之间的工作日天数（排除周末和自定义节假日），或某日期加 N 个工作日。Count working days between dates (excluding weekends and custom holidays), or add N business days.
如何使用「工作日计算器」？How do I use the Business Days Calculator?
在「工作日计算器」中，填写「开始」、「结束」、「加工作日(可选)」等参数，结果会随输入实时计算并显示在下方。In the Business Days Calculator: Fill in "Start", "End", "Add business days (optional)"; results are recalculated instantly as you type.
时区如何处理？How are time zones handled?
「工作日计算器」默认使用你设备的本地时区（按浏览器设置），夏令时由浏览器自动处理。The Business Days Calculator uses your device's local time zone by default, and daylight saving time is handled by the browser.
「工作日计算器」免费吗？需要注册吗？Is the Business Days Calculator free? Do I need an account?
「工作日计算器」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 Business Days 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.