In the Print screen (View), you can tap on "Printer Options" to edit various layout features.
You can change the page range, margins, grayscale (black and white), orientation (landscape, portrait, rotate), paper size (A4, A3, US Letter, US Legal, Custom, Envelope, Labels), duplex, paper tray and more.
For Calendar printing you can change the options for printing notes, locations, date range for multiple months, days or weeks, All Day events, text size, only print week days, single page month view and more.

For the largest range of options, install and select a WePrint server printer (View).

If the printed size is wrong, you can change the margins to "0". You can also use a negative number to expand the printed size to print the full page, eg -1.0,-1.0,-1.0,-1.0
You can choose a different paper size. You can also create your own custom paper size for your printer, eg A3, Tabloid, labels, paper roll etc.