Date Calculator
The Date Calculator adds or subtracts a number of years, months, and days to/from a starting date and shows the resulting date — sensibly rounding month-end edge cases (e.g. Jan 31 + 1 month).
How to use
- 1Select the starting date.
- 2Choose "Add" or "Subtract".
- 3Enter years, months, days and the resulting date updates instantly.
Why FREE PDF?
- Completely free
- No account required
- Processing happens in your browser whenever possible
- Your files stay yours
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Frequently Asked Questions
How do I add days/months/years to a date?
Enter the starting date and the number of days, months, and years to add or subtract — the new date is calculated instantly.
Can I subtract to go back in time?
Yes, choose the add or subtract direction to calculate backward and find a past date too.
How are month-end dates (e.g. Jan 31 + 1 month) handled?
If the target month doesn't have that day (e.g. February has no 31st), the date is sensibly adjusted to that month's last day.
Is this suitable for calculating contract or due dates?
Yes, it's useful for finding delivery dates, due dates, or a date a set period from now.