Date Calculator
Free online date calculator — days between dates, date plus/minus N days, and weekday lookup for planning.
30
天
4.3
周
1.0
月（约）
0.08
年（约）
FAQ
Can I count days between two dates?
Yes, inclusive and exclusive totals both shown.
Can I add/subtract days from a date?
Yes — forward and backward from any date.
Does it tell the weekday?
Yes, weekday is displayed for every computed date.