The Time Calculator calculates time differences between major cities in the world.

Enter a Local Time (1) by clicking the Now or Edit button. Then select a city from the list on the left (3a). Usually this will be a city in your time zone. Your choice is displayed (3b).

If either the Local Time or Destination Time is currently observing Daylight Savings Time, click the checkbox below the time field (2).

Then select a city from the list on the right (4a). If the city you want is not in the list, pick a city that is in the same time zone. Your choice is displayed (4b).

The time for the city on the right will be displayed in the Destination Time field (5a). The relative date for the destination time is displayed by the highlight of the Yesterday, Today and Tomorrow buttons (5b).

You can find the difference between two times or add a list of times by clicking the Calculations button (6). See below for more information.

To explore the Number, Dates, Measurement and Currency Calculators click the buttons at the top of this screenshot.

This Time Calculator calculates the difference between times or adds a list of times.

Enter the Start Time (1) and the End Time (2) and click the Calculate Difference button (3). The result will be displayed in three formats, Hrs:Mins (6a), fractional hours (6b) and a long format (6c).

To add a list of times, just type the list into the field provided (4) and click the Add List button (5). The result will be displayed in three formats, Hrs:Mins (6a), fractional hours (6b) and a long format (6c).