SpreadsheetConverter always converts all sheets and include all necessary parts into the web page.
However, you do not need to show all sheets to the user. You can select to show the selected sheet, the selected sheets or all sheets.
You will get tabs if you choose to show more than one worksheet.
SpreadsheetConverter supports references between worksheets within a workbook, but not off-book references.
It converts the whole workbook including all worksheets and links between worksheets.
Yes, all relevant formulas and tables will be used, regardless on which workssheet they are.