Date Calculator Add or Subtract
Quickly add or subtract days, weeks, months, or years from a specified date using our free online tool, ideal for scheduling and planning.

Check It Yourself
About This Tool
Our Date Calculator allows users to easily perform date arithmetic by adding or subtracting specific time units from a chosen start date. The intuitive interface lets users select a date, specify the number of days, weeks, months, or years to adjust, and choose the operation—either addition or subtraction. Immediately, the tool displays the resulting date in a standard format, streamlining project planning, deadline setting, and scheduling tasks.
Ideal for professionals across industries such as project management, HR, event planning, and personal scheduling. The calculator handles complex cases like leap years and varying month lengths, providing accurate results. Users can customize regional date formats for international use, and the interface supports mobile and desktop environments. Additional features like copying the output, saving recent calculations, and multilingual support make this tool versatile.
Whether planning a project timeline, setting reminders, or calculating expiry dates, this tool simplifies date adjustments efficiently and accurately.
How to Use
1. Select or input your start date.
2. Enter the number of units to add or subtract.
3. Choose the unit (days, weeks, months, years).
4. Select operation: Add or Subtract.
5. Click the 'Calculate' button to see the result.

FAQs/Additional Resources
Find Quick Answers
Can I add or subtract multiple different units at once?
Does the tool account for leap years?
Can I use regional date formats?
Is it possible to reset the inputs easily?
Can I share or export the result?
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