Date Calculator
Add or subtract days from a date, or find how many days are between two dates.
Result date
2026-04-01
How to use
- Choose add days, subtract days, or days between two dates.
- Enter the start date (and end date or number of days as needed).
- See the result date or day count instantly.
How it works
Add/subtract: shifts the calendar date forward or backward by the given number of days.
Days between: counts calendar days from start date to end date (inclusive of standard date math).
Example
What date is 90 days after January 1, 2026?
April 1, 2026 (90 days later).
Frequently asked questions
How do I calculate days between two dates?
Enter the start and end dates and select 'Days between'. The calculator counts the number of calendar days between them.
Does this account for leap years?
Yes. Leap years and varying month lengths are handled correctly in all calculations.
Can I add business days only?
This calculator adds calendar days. For business days (excluding weekends), count manually or use a dedicated business day calculator.
How many days until my deadline?
Set today as the start date and your deadline as the end date using 'Days between' to see the remaining days.
What is 30 days from today?
Select 'Add days', enter today's date and 30 as the number of days to find the future date.