Open your document in Google Docs
Select the text you want to double space
Click Format
Click Line & paragraph spacing
Click Double
To double space the whole document, press Ctrl+A on Windows or Command+A on Mac before selecting Double
Open your document in Google Docs
Select the text you want to double space
Click Format
Click Line & paragraph spacing
Click Double
To double space the whole document, press Ctrl+A on Windows or Command+A on Mac before selecting Double