Date calculator
Add or subtract days, weeks, months and years from a date. Days until an event.
Operation
Amount
Unit
Result
—
Days until a date
—
Runs locally in your browser. Nothing is uploaded.
How to use
- Pick a start date, today by default.
- Enter the amount and unit to add or subtract.
- Or enter a target date to see how many days are left.
Questions
What happens when adding a month to January 31?
The result is clamped to the last day of the target month, so February 28 or 29.