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To download Date Time Calc from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.

Date Time Calc

By Tension Software

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This is the old outdated version of Date Time Calc. Please Click 'more Apps by Tension Software' and select Date Time Calc 2 for the latest full featured release.

Date Time Calc is a small utility able to calculate future and past dates using a given time interval from an assigned date 'Date Guess' and also 'Date Difference' between dates (even with precision to hours, minutes, seconds)


Date Time Calc is intended for users needing to calculate expected dates after a specific number of days as in a typical business use (example of periods often used in business: 15, 30, 60, 90, 120 or 150 days)
or to know the exact time interval between two specific dates and time 'Time difference' often needed in technical fields or for business contracts.

The dates can be selected using standard calendar controls
Time interval is expressed in days or in a more precise way also using hours, minutes and seconds
Result is re-visualized in a 'clear readable way' in the lower part of the window to avoid wrong interpretation of the results

Fully Mac OS X 10.7 Lion compatible.
Optimized for OS X 10.8 Mountain Lion

• Results displayed and updated as you type
• Date display using your current local settings and language
• 'Set date to now' button for fast calculation of backward and forward dates from the current date
• Calculates time difference, if requested, also using hours, minutes, seconds
• Calculates time interval, if requested, also using hours, minutes, seconds
• Result summarized also in a plain text to avoid misinterpretation
• Bullet proof results using Mac OS X Apple libraries to calculate and manipulate dates

The app is realized to be simple and effective for users in need of an tool easy and fast to use and showing in a clear and simple way the result

PDf user guide embedded in the app

What's New in Version 1.2.2

Bug fix: solved crash launching under OS X 10.7 Lion


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Date Time Calc
View in Mac App Store
  • USD 2.99
  • Category: Business
  • Updated:
  • Version: 1.2.2
  • Size: 1.1 MB
  • Language: English
  • Developer:

Compatibility: OS X 10.7 or later, 64-bit processor

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