Browse free open source Date Calculators and projects below. Use the toggles on the left to filter open source Date Calculators by OS, license, language, programming language, and project status.

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  • 1
    A calculator for dates. May calculate how many days there are between two dates or the next date from a starting date. Runs on Palm Os and Windows.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 2
    End of Day Daily Tracking Calculator. A quick and dirty text based calculator designed to give you week to date sales, labor cost, inventory over/shortage and ext.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    Programmable Calendric Calculator

    Programmable Calendric Calculator

    Convert between calendars and work with date ranges.

    This calculator will allow you to convert between many different world calendar schemes and calculate ranges and ages based on these calendars. The calculator also has a script language that allows you to create variations of the built-in calendars: calendars that shift the new year to a different day, hybrid calendars that switch between schemes, local observational calendars that depend on a particular location, year counts that change for specific eras (regnal calendars) and calendars that require adjustment due to subtle differences in calculation.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 4

    Time and Date Calculator

    Simple calculator that can handle dates and time.

    Goal of this project is, creating a calculator that can handle all date and time operations that a user may need. You can operate with milliseconds as months, years or dates. Examples: 2013-11-25 + 3d => 2013-11-28 2013-11-25 - 2013-10-20 => 36d 1h 5h + 6h => 11h 1382220000t => 2013-10-20
    Downloads: 0 This Week
    Last Update:
    See Project
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