Date & Time
Instant, private, and free
Date Calculator.
Add or subtract days, weeks, months from dates
On-device calculationNo signup
01
Set your values
Results update as you type.
02 / ANSWER
Calculation Mode
How to Use
Add/Subtract: Calculate a future or past date by adding or subtracting time
Difference: Find the time between two dates
All calculations account for different month lengths and leap years
FAQs
How do I add or subtract days from a date?
Select your starting date, choose Add or Subtract, enter the number of days, and click Calculate.
Does the date calculator account for leap years?
Yes, all leap year rules are handled accurately.