Need to know the deadline for a 90-day project, or when your visa expires six months from now? Stop messing with calendar apps. This date calculator gives you the exact future or past date in seconds, saving you from counting leap years.

Quick Date Math: Stop Counting on Your Fingers

1. Set the Action: Add or Subtract

First, tell the calculator what to do. Look for the two buttons at the top:

• Add Time: Select this if you want to find a future date, for example, a project due date or a birthday six weeks away. This button is the default setting.
• Subtract Time: Select this if you want to find a past date, for example, figuring out what day was 30 days before a certain event.

2. Input the Starting Point

Use the “Starting Date” field to select or type the reference date.

• Example 1 (Future): If your wedding is today and you want to book a six-month anniversary dinner, today is your starting date.
• Example 2 (Past): If you are reviewing records, the deadline date might be your starting point for calculating a date 90 days prior.

3. Define the Time Jump

The next two fields tell the tool exactly how far to jump forward or backward.

• Amount: Enter the number of units you need to move. Use a simple digit like 6 or 90.
• Unit: Select the time measurement, choosing from Days, Weeks, Months, or Years.

Relatable Scenario: You start a new job on May 15 and need to track when your 3-month probation ends. You would select May 15 as the starting date, enter 3 as the amount, and choose Months as the unit.

4. Get the Final Date

Click the “Calculate Date” button once you have filled in the fields.

The result section will instantly appear, showing you three clear pieces of information:

• The Final Date: The exact date after the calculation, formatted clearly, for example, “August 15, 2026.”
• The Day: It even tells you the day of the week, so you know if your deadline is a tough Monday or a chilled Friday.

This tool guarantees accuracy; it handles tricky month lengths and leap years so you do not have to worry about the details.