Time Calc calculates numbers, durations and dates.

It's convenient if you want to:
- Figure out play time of several music tracks
- Report how many hours you've worked total
- Find out your flight duration by subtracting departure time from arrival time (time zone supported)
- Find out expiration dates
- Duration between two photos.

Time Calc can do the following arithmetic.
Number + Number
Number - Number
Number * Number
Number / Number
Duration * Number = Duration
Duration / Number = Duration
Duration + Duration
Duration - Duration
Duration / Duration = Number
Date + Duration = Date
Date - Duration = Date
Date - Date = Duration
Number / Duration = Number per unit duration

M+ & M- keys to add/subtract what's in the memory.
Tap = (equal) key to change units from sec, min, hour, week.
Tap # key to drop unit. e.g. 1.5 days becomes 1.5

What's New

Version 1.6.2

Opens Gmail app only if you only use the app but not Mail app.
New URL for the web site.

Ratings and Reviews

4.8 out of 5

5 Ratings
5 Ratings

GREAT App, very handy


I'm bad at doing date and time calculations. They are cumbersome and tedious. I use an Excel spreadsheet to make the calculations much easier.

Then I discovered "Time Calc: durations and dates". It is GREAT! This app is much easier to use than the spreadsheet, and can do much more. It has a pretty short learning curve.

Great for:
- Calculating the number of days between two dates. Or the number of hours, minutes, seconds, etc.
- Adding up total minutes and seconds of MP3 tracks to fit on a CD.
- Converting one time measure to another: X hours = how many days, weeks, minutes, seconds, hours by pressing just one key.

Nice GUI, very handy, highly recommended.


Tsuyoshi Niwa
23.4 MB
Requires iOS 9.1 or later. Compatible with iPhone, iPad, and iPod touch.
English, Czech, Dutch, French, German, Italian, Japanese, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese, Turkish
Age Rating
Rated 4+
© Tsuyoshi Niwa


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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