Date Tool

Date Calculator

Add or subtract days, weeks, months, and years from any date. Calculate future dates for deadlines and events, or find past dates for record-keeping and historical reference.

Start Date

Operation

Years

Months

Weeks

Days

Enter a start date and time period to add or subtract.

Learn More About Date Calculations

Master date arithmetic and use dates effectively in planning:

Beginner Guide

Date Math Basics

How to add and subtract time from dates correctly

Q&A Post

Deadline Planning Tips

Using date calculations for effective project deadline management

Q&A Post

Calculating Recurring Events

How to calculate dates for recurring appointments and events