Date Difference Calculator
Find the exact difference between two dates in years, months, days, weeks, hours, minutes, and seconds.
How Date Difference Is Calculated?
This calculator measures the exact time span between two dates. It breaks the result into years, months, days, and also total days, hours, minutes, and seconds.
Formula:
Difference = End Date - Start Date Breakdown: • Years / Months / Days = Calendar calculation • Total Days = Hours ÷ 24 • Total Hours = Minutes ÷ 60 • Total Minutes = Seconds ÷ 60 • Total Seconds = Milliseconds ÷ 1000
Difference = End Date - Start Date Breakdown: • Years / Months / Days = Calendar calculation • Total Days = Hours ÷ 24 • Total Hours = Minutes ÷ 60 • Total Minutes = Seconds ÷ 60 • Total Seconds = Milliseconds ÷ 1000
- Select the start date.
- Select the end date.
- The calculator finds the exact calendar-based difference.
- It also converts the difference into total days, weeks, hours, minutes, and seconds.
FAQ
Can this calculate future dates?
Yes, you can select any future or past date.
Does this work across leap years?
Yes, leap years and month lengths are calculated accurately.
Why is months/days difference sometimes uneven?
Months have different lengths (28–31 days), so exact results vary.
Is this accurate across time zones?
Yes, it uses your system's local time zone for accuracy.