Windows 7/8/10 – Date Calculator

You have asked for a response 45 days from the date of a letter.  What date would that be?  Windows 7 has a built-in standard calculator, but it also has additional functionality, including date conversion.  Date conversion allows you to quickly calculate the difference between two dates or to add or subtract days from a specific date without looking at a calendar.

Launch the Calculator

1. Click the Start button and type Calculator in the Search programs and files box.
2. Click the Calculator at the top of the search pane to launch it; -or- Right-click on the Calculator and choose Add to Start Menu or Add to Taskbar for future ease of access.

1. Inside the Calculator, click View > Date calculation.

Calculate the Difference Between Two Dates

1. In the From and To fields, select the beginning and ending dates from the pop-up calendars.
2. Click the Calculate button to see the results.

Add or Subtract Days to a Specified Date

1. Under Select the date calculation you want, click the drop down and choose Add or subtract days to a specified date.

    

2. Click the From drop-down to select the beginning date from the calendar.
3. Click the Add or Subtract radio button to add or subtract days from this date.
4. Click on the arrows to increase or decrease the number of years, months, or days to add or subtract, and click Calculate to see the results.