Everyday

Date Difference Calculator

Days between two dates — or add days to a date.

Mode

From

To

Difference

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Also equals

Weeks0

Months (approx)0

Years & days0

Counting days between dates

Enter two dates to see how many days, weeks, months, and years separate them — handy for deadlines, due dates, notice periods, anniversaries, or project planning. Switch to add/subtract mode to find a future or past date, such as 90 days from today.

Questions

How many days are between two dates?

Enter both dates in "Between dates" mode and the tool shows the exact day count, plus weeks, months, and a years-and-days breakdown.

How do I add 90 days to a date?

Switch to "Add / subtract", pick a start date, and enter 90. Use a negative number to go backwards.

Does it count both start and end days?

The difference is the number of nights between the dates. Add one if you need to count both the first and last day inclusively.