How to Calculate Date Differences and Add Days to a Date

Date Difference Calculation

Calculate the exact duration between any two dates in years, months, and days. Perfect for project planning, contract durations, and age calculations.

Adding and Subtracting Days

Need to know what date is 90 days from now? Our date calculator makes this instant. Useful for deadlines, shipping estimates, and subscription management.

Workday Calculations

For business planning, workday calculations exclude weekends and holidays. Customize which days count as workdays to match your business schedule.