Date Calculator
Quickly add or subtract days, weeks, months or years from a date, or calculate the exact number of days between two dates — perfect for deadlines, events and planning.
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About the Date Calculator
Quickly add or subtract days, weeks, months or years from a date, or calculate the exact number of days between two dates — perfect for deadlines, events and planning. It is completely free to use and works on any device — desktop, tablet or mobile — with no installation required.
Key features
- Add or subtract days, weeks, months and years
- Count days between two dates
- Handles leap years automatically
How to use
- Pick a start date.
- Add/subtract a period, or select a second date.
- See the result date or the day difference instantly.
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Frequently Asked Questions
Does the date calculator account for leap years?
Yes, leap years are handled automatically for accurate results.
Can I calculate business days?
This tool calculates calendar days. For business days, add a buffer manually.
What date ranges are supported?
Any valid date from year 1 to 9999 is supported.