There are a few ways to convert Excel to Google Sheets. The first way is to use the importXLS function. The importXLS function takes an Excel file as an input and imports it into a Google Sheet. The second way is to use the Google Sheets add-on called XL2GS. The XL2GS add-on allows you to import Excel files into Google Sheets and also keep the formatting of the Excel file. The third way is to use the Google Sheets API. The Google Sheets API allows you to convert Excel files into JSON objects and then import the JSON objects into Google Sheets.