Date.Time Calculator


You can perform calculation of Date (Time Point) and Time (Time Interval), and units conversion.

Date.Time Calculator is support the following calculation.

  • Arithmetical operations of numerical values ​​(integer and decimal)
  • Arithmetic operations of numerical values ​​and Time Interval
  • Operations between Time Interval (addition, subtraction, division)
  • Operations of Time Interval and Time Point (addition, subtraction)
  • Time Point operation (difference)
  • Unit conversion of time
  • Interconversion with POSIX Time
  • Mutual conversion of time zones

Date.Time Calculator is useful for the following applications.

  • What is the date 100 days after today?
  • What is the date and time before 32768 seconds from now?
  • When it is 1 minute 32.6 seconds per lap, what is the necessary time at 62 laps?
  • Furthermore, the time after 62 laps?
  • What is the number of days since January 23 this year?
  • How many days is 100 000 seconds?
  • What is the date and time indicated by 1 234 567 890 seconds at POSIX Time?
  • What seconds is it now to express with POSIX Time?


Version: 1.3.1
Compatibility: Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Languages: English, Japanese