Date Calculator: Find Date Differences & Add Days
How many days between two dates? What date is 90 days from now? The Date Calculator answers both questions and more with precise results.
What It Does
The Date Calculator computes the exact difference between any two dates in years, months, weeks, and days. It can also add or subtract any number of days, months, or years from a given date. Results include weekday information and total counts in multiple units.
How to Use It
To find a date difference, enter a start date and end date and click Calculate. To add or subtract time, enter a starting date, specify the amount to add, and click Calculate. Results appear instantly in multiple units.
Tips & Tricks
Use it to count business days by noting weekends in your calculation. Calculate project deadlines by adding working days to a start date. Find how many days until holidays, exams, or any important event.
Use Cases
Project managers calculate sprint end dates and milestone deadlines. HR departments compute employee tenure and benefit eligibility dates. Event planners determine the exact number of days until a wedding, conference, or launch date.
Try Date Calculator Now
Ready to get started? Use this free tool directly in your browser — no sign-up required.
Open Date Calculator