How to Fill a Series on Google Sheets on PC or Mac

Go to https://sheets.google.com in a web browser. If you’re not already signed in to your Google account, sign in now.

Click the file you want to edit.

Select the cell(s) you want to make into a series. Click one cell to select it, or click and drag to select multiple cells. A blue border will appear around the selected area.

Hover the mouse over the blue square. It’s at the bottom-right corner of the selected cell(s). The cursor will turn into a plus (+) sign.

Click and drag the + down or across the range you want to fill. The value or formula in the selected cell(s) is now repeated in the series.