Date Calculator
Calculate days, weeks, months, and years between any two dates. Or add and subtract time from any date to find a past or future date.
Calculate days, weeks, months, and years between any two dates. Or add and subtract time from any date to find a past or future date.
Years
0
Months
3
Weeks
14
Total Months
3
= 0 yr 3 mo 8 days | 14 weeks 2 days
Subtract the earlier date from the later date to get milliseconds, divide by 86,400,000 (ms per day). For accurate month and year counts, you must track rollovers carefully since months have different lengths. This calculator handles all edge cases including leap years.