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Whenever you want to know
  • how many days (or years, months, days) you have lived in this world,
  • or how many days are left till His/Her bithday,
  • or how long lasted Word War I,
  • or the project you have been working on,
  • or what date will it be 3 years, 5 months and 23 days from now
  • or was 55 year, 9 months, 19 days ago -
DaysCalc will give you the answer.

To count the number of days to a future date (How many days till ... ?), set the Start Date 'Now' button to 'NOW', and the Start date will be setting to each new day automatically.

Her BirthdayAlert

And, if your set the Alert on, the End date will become blue when the Alert time comes. And the Start date will become red when the date arrives.

Alert OnIt's Now!

To count how many days elapsed from a past date (How old are you?), set the End Date 'Now' button to 'NOW' - the End date will be updating every day automatically.

To create a new event click on the event name and edit it using the keyboard.

How Long Now?Name Keyboard

You can keep records of dates, like dates of birth (and deaths) of family members, friends and historical personalities. Or dates of historical events, or of start and end of projects.

The events can be named, saved, deleted and selected from the list of events. Events with the alert set on have blue background.

How Long?Events

Designed for simplicity of use, DaysCalc offers the most efficient and foolproof data entry: you never do more than 4 taps for a year, and 1 tap for a month or day.

DaysCalc uses the proleptic Gregorian calendar from 0001-01-01 AD to 9999-12-31 AD.


DaysCalc app is a universal Progressive Web Application (PWA) which works on any device (phone, tablet, desktop) on any operating system from your browser, as long as it supports modern JavaScript. And, if you install it on your device, you will be able to start it by clicking its badge on your Home Screen, like any other app on your device.

DaysCalc app is FREE. It has no ads and does not collect any data.

DayysCalc Badge

So, don't get lost in Time ...

Try DaysCalc HERE ... NOW!

      CONTACT: support@dalasoft.co.uk
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