Calculators
Date calculators
Date calculators for working out calendar-day differences, business-day counts, and date adjustments using the same clean format as the rest of the site.
Add or subtract date
Add to or subtract from a date using a simple combination of start date, direction, amount, and unit.
Resulting date
Thursday, 23 April 2026
Calculation result
23 Apr 2026
added 30 days from the selected date
0 years, 0 months, 0 weeks, 30 days
720
hrs
43,200
min
2,592,000
sec
30 days from the selected date lands on Thursday, 23 April 2026. This calculator treats the change as a calendar-date operation, not a business-day calculation.
What this calculator does
Move a date forward or backward using days, weeks, months, or years and immediately see the resulting calendar date.
How it works
- Choose the starting date, whether you want to add or subtract, the amount, and the unit.
- The calculator performs a calendar-date adjustment rather than a business-day adjustment.
- It then shows the resulting date and the size of the change that was applied.
When to use it
- Working out renewal dates, expiry dates, or reminder points.
- Planning dates a set number of weeks or months before an event.
- Checking what date lands a fixed number of days after a milestone.
Example
If you add 30 days to March 24, 2026, the tool shows the resulting calendar date directly instead of making you count the days manually.
Things to watch for
- Month and year changes follow calendar rules, so month-end results can vary depending on the starting date.
- This tool does not exclude weekends or public holidays.