DateObject gives you an exact date that you can do computations with:

It understands most common date formats:

Now gives you the date and time at the instant you run it:

Subtract a date from Now to find the number of days back to the date:

Round rounds decimal numbers to integers:

Round a date computation to get an answer in whole days:

UnitConvert converts between different units, like grams and pounds, or days and minutes.

This gives an answer in days:

Convert the result to minutes:

The result of a date calculation has both a value (the number) and a unit (min):

Use QuantityMagnitude to get just the value:

IntegerName gives the spelled-out names of numbers:

Spell out the result of a date calculation:

Deploy the “days old” calculation to make a website where you can enter a birthdate and find out how many days old you are:

Click the link in the output to visit the site.

Format the output more nicely using Row:

Make the text larger:

Click the link in the output to visit the site.

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