Date Add Subtract Calculator
Add or subtract days, weeks, months, or years from any date. Perfect for planning future dates, calculating deadlines, and complex date math operations.
Date Math Calculator
Perform date arithmetic with multiple operations
Date Operations
Key Features
Understanding Date Math
Tips & Strategies
Frequently Asked Questions
Can I perform multiple operations on the same date?
Yes! You can add multiple operations like "+3 months -5 days" to perform complex date calculations in sequence.
How accurate are month and year calculations?
Our calculator handles varying month lengths and leap years accurately using the date-fns library, ensuring precise calculations even for edge cases.
What is batch mode used for?
Batch mode allows you to perform the same operation on multiple dates and export the results as a CSV file, perfect for project planning and bulk calculations.
Can I calculate dates in the past?
Absolutely! Use the subtract operation to calculate dates in the past from any given base date.
How do I use quick presets?
Click any preset button (+1 Week, +1 Month, etc.) to automatically configure common date calculations. You can then modify or add more operations.
What formats does the calculator support?
Input dates use the standard YYYY-MM-DD format. Results are displayed in human-readable format and can be copied in ISO format.
How does the calculator handle edge cases?
The calculator properly handles leap years, month-end dates (like Jan 31 + 1 month), and automatically adjusts for varying month lengths using date-fns library.
Can I export batch calculation results?
Yes! Use batch mode to process multiple dates with the same operations, then export results as a CSV file for spreadsheet analysis.
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