Most of the calculator apps don't have date calculation feature. By default Windows 7, 8 and 10 have date calculation option. But I'm almost sure that this feature is missing in your smartphone. So, I'm gonna recommend an app for you from Google Play . . .
Age Calculator | About
- Name : Age Calculator
- Category: Tools
- Rating: 4.3
- Developer: Smart App Array
Age Calculator | Features
- Simple, handy & attractive interface
- Show the day with date
- Calculate the date/ age in terms of years, months, weeks, days, hours, minutes and seconds.
- Calculate the days remaining to next birthday
- Shows the upcoming birthdays up to next 10 years with days
- Works with almost all running versions of android
Download > Install > Run
- Follow the above link and download the app from there.
- Then install and run it.
- You can change date format from settings
Hope you're gonna love it . . .