Date Difference Calculator: Calculate The Difference or Duration Between Two Dates

Date difference calculators help people calculate the difference between two dates in years, months, weeks, or days.

These calculators can also take into consideration the days of the week and leap years when they come to calculating the difference in years.

Date difference calculators can be used for a number of reasons such as:

Planning vacations and trips
Creating family trees and timelines
Calculating your age or that of your partner in relation to a particular milestone (such as graduation)
Calculating how old you will be in relation to someone else's birthday
The number of years, months, weeks, and days that have passed from one date to another.
How old someone is in terms of years and months.
How old someone was on their last birthday.
How far into a given year someone has been alive.