In Microsoft Word, select the text
Go to the Home tab
Click Line and Paragraph Spacing
Choose 2.0
In Google Docs, select the text
Go to Format
Select Line & paragraph spacing
Click Double
In Apple Pages, select the text
Open the Format sidebar
Click Style
Set line spacing to 2.0
In plain text editors, insert a blank line between lines if needed
Use the document’s paragraph or line spacing settings when available