Calls over Google Sheets is a powerful dialer that enables users to call phone numbers stored in a Google Sheet. The process begins by inputting phone numbers into the sheet, formatted as digits without any plus sign or other symbol. Once the data is entered, a mathematical formula can be applied to extract cell values and make a call. This workflow helps streamline communication tasks, saving time and effort while working with large sets of phone numbers. It also allows users to easily format and input data into the sheet for quick retrieval when making calls. Calls over Google Sheets is an efficient tool for automating calls from within Google Sheets with minimal hassle.