时间换算工具Time Converter
这个年份，距今多少年？
How many years ago?
输入公元或公元前年份，或选择明清年号，快速计算到当前公历年份的年数差。
Enter a CE or BCE year, or select a Ming or Qing reign title, to calculate the difference to the current Gregorian year.
① 输入年份① Enter a year
可输入 −3000 至 3000 年；负数表示公元前（如 −221 = 公元前 221 年），0 无效；选择年号后会自动填入其元年。Enter −3000 to 3000. Negative values mean BCE (e.g. −221 = 221 BCE); 0 is invalid. Selecting a reign title fills in its first year.
② 选择明清年号② Select a Ming or Qing reign title
此处按年号元年计算，不代表某件器物的制作年份。This uses the first year of each reign and does not identify an object's date of manufacture.
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