Date Calculator
Add or subtract days from any date free. Pick a start date, enter a number of days, and instantly see the resulting date and day of the week. No signup, everything runs in your browser.
Your result will appear here
Resulting date
The calculation uses your browser's local calendar and correctly handles month and year boundaries, including leap years.
How to use
- Pick a start date from the calendar.
- Enter how many days to add or subtract and choose the operation.
- Click Calculate Date to see the resulting date and weekday.
Frequently asked questions
How do I find a date 90 days from today?
Pick today's date as the start date, enter 90, choose “Add days” and click Calculate Date. The result shows the date 90 days later and which weekday it falls on.
Does it handle leap years correctly?
Yes. The calculation uses your browser's built-in calendar, so 29 February in leap years and month lengths of 28–31 days are handled automatically.
Can I subtract days to find a past date?
Yes — choose “Subtract days” and enter the number of days. For example, subtracting 30 days from 1 March 2026 gives 30 January 2026.
Is my date sent anywhere?
No. The calculation runs entirely in your browser and your dates are never uploaded or stored. Use it as a date calculator free — no signup, nothing to install.
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