Calculate days between two dates or add/subtract days, months, and years from a date.
What is Date Calculator?
Three modes: find the difference between two dates (in days, weeks, months, years, hours, minutes), add time to a date, or subtract time from a date. Perfect for deadline planning, project management, and date math.
How to Use
Choose mode: Days Between, Add, or Subtract
Set your dates
See results in multiple time units
Frequently Asked Questions
Does it handle leap years?
Yes, all calculations properly account for leap years and varying month lengths.
Related Tools
🎂 Age Calculator — Free age computation tool — calculate age from date of birth in years, months, days, hours, and minutes with f
⏰ Time Calculator — Calculate time difference between two times or add hours and minutes to a time. Shows decimal hours.
% Percentage Calculator — Calculate percentages instantly — find X% of Y, percentage change, increase/decrease by %, and what percent X