Free date calculator to find a future or past date by adding or subtracting any combination of days, weeks, months, and years.
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Need to find a deadline 90 days from now? Or what date was 6 months ago? Our date calculator adds or subtracts any combination of days, weeks, months, and years from any starting date.
Date calculations are complex because months have different lengths, years can be leap years, and adding months doesn't always result in a valid date (like adding 1 month to January 31). Our calculator handles all these edge cases correctly.
Example
March 15 + 90 days = June 13Automatically handles months of different lengths and leap years.
Add or subtract in days, weeks, months, or years.
Perfect for calculating deadlines and timelines.
Calculate when projects or payments are due.
Determine contract expiration dates.
Plan events a certain time in the future.
Calculate when to renew prescriptions.
If the resulting month doesn't have that day, it uses the last day of the month. For example: January 31 + 1 month = February 28 (or 29 in a leap year).