Date Calculator

Calculate the exact difference between two dates in days, weeks, months, and years. Perfect for age gaps, project timelines, contracts, and planning.

Start Date End Date

Please select valid start and end dates.

Select your start date and end date, then click calculate. The tool instantly shows the difference in years, months, weeks, and days.

Accurate date calculations, clean design, mobile-friendly layout, fast performance, and instant results without reloading the page.

The calculator breaks down the total time difference so you can easily understand long and short durations between any two dates.

Ideal for calculating age gaps, project durations, work experience, academic timelines, legal contracts, and relationship milestones.

You can use past or future dates, and the calculator works accurately across leap years and different month lengths.

This Date Difference Calculator is completely free, requires no signup, and works on all devices including mobile, tablet, and desktop.