📆 检查平年Check Common Year
判断年份是平年还是闰年。本地处理。Check whether a year is a common year (not a leap year). Processed locally.
使用说明与常见问题How-to & FAQ
「检查平年」是什么？What is the Check Common Year tool?
判断年份是平年还是闰年。本地处理。Check whether a year is a common year (not a leap year). Processed locally.
如何使用「检查平年」？How do I use the Check Common Year tool?
输入一个整数年份，下方会显示它是平年还是闰年。Enter a year as a whole number to see whether it is a common year or a leap year.
怎样判断闰年和平年？How is a leap year decided?
能被 4 整除但不能被 100 整除，或者能被 400 整除的年份是闰年，其余是平年。例如 2024、2000 是闰年，2023、2100 是平年。A year divisible by 4 but not by 100, or divisible by 400, is a leap year; every other year is a common year. So 2024 and 2000 are leap years, and 2023 and 2100 are common years.
可以输入负数或很大的年份吗？Can I enter negative or very large years?
可以。本页按外推格里高利历和天文纪年判断，年份范围 −1,000,000,000 到 1,000,000,000：0 年即公元前 1 年（闰年），−4 即公元前 5 年（闰年）。其他日期工具只接受 0000–9999 年的 YYYY-MM-DD 日期。年份须为整数，2024.5 这样的小数会报错。Yes. The page uses the proleptic Gregorian calendar with astronomical year numbering, for years from −1,000,000,000 to 1,000,000,000: year 0 is 1 BC (a leap year) and −4 is 5 BC (also leap). The other date tools accept YYYY-MM-DD dates for years 0000–9999 only. The year must be a whole number; a decimal such as 2024.5 gives an error.
和时区有关吗？Do time zones matter?
无关。只根据你输入的年份按规则判断，不读取设备时钟或时区。No. Only the year you type is checked against the rule; the device clock and time zone are never used.
「检查平年」免费吗？需要注册吗？Is the Check Common Year tool free? Do I need an account?
「检查平年」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 Check Common Year tool is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.