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Date Calculator

Calculate the number of days between two dates, or add and subtract days from a date.

Works offlineNothing uploaded

Start Date

End Date

Enter two dates to calculate the difference

How to Use

Enter the start date

Select or type your first date.

Enter the end date

Select or type your second date.

View the difference

See the difference in days, weeks, months, and years.

How do I calculate days between two dates?

Select the 'Days Between' mode, enter your start and end dates, and the tool instantly shows the difference in days, weeks, and months.

Can I add or subtract days from a date?

Yes. Switch to the 'Add/Subtract' mode, enter a start date and the number of days to add or subtract, and the result date is calculated instantly.

Does this account for leap years?

Yes. The calculator uses JavaScript's Date API which correctly handles leap years and month boundaries.

Is this date calculator private? Can I use it offline?

Yes on both counts. Calculations run on your computer with JavaScript — your dates never leave your device, and the tool works offline.

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