How to create barcodes in Google Sheets
You can generate barcodes in Google Sheets using existing plain-text data in the Google Sheets document. Barcodes in Google Sheets are essentially a font and all you have to do is change the font of the column to a barcode font.
If you can't find the barcode font in the list of fonts, click the More fonts button in the Font menu.
Search for 39 in the list of fonts and select the fonts you'd like to use.
You can download this file as an Excel spreadsheet (.xlsx extension). You will have to instal a barcode font on to your computer to see barcodes in Excel, and then repeat the process of changing the font of the barcode column to the newly installed barcode font.
If you want to print these codes, you can print them straight out of the Google Sheets document to a printer or to a PDF.