Date Calculator

Date Calculator

Calculate the difference between two dates or add and subtract days, weeks, months, and years from any date. Get results broken down into years, months, weeks, and days for precise date arithmetic.

• Calculate the exact difference between two dates
• Results broken down into years, months, weeks, and days
• Add or subtract days, weeks, months, and years from a date
• Count business days excluding weekends
• Include or exclude the end date in calculations
• Keyboard-friendly date input with date pickers
• All processing happens locally in your browser

How to Calculate Dates

1. 1

   Choose a calculation mode

   Select 'Date Difference' to find the gap between two dates, or 'Add/Subtract' to find a date relative to a starting date.

2. 2

   Enter your dates

   Use the date pickers to select the start and end dates for difference calculation, or a start date for add/subtract.

3. 3

   Set the offset (for add/subtract)

   Enter the number of days, weeks, months, or years to add or subtract from the start date.

4. 4

   View the result

   See the calculated result instantly — either the date difference breakdown or the resulting future/past date.

Frequently Asked Questions

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