On Windows, press `Alt + 0151` on the numeric keypad
On Mac, press `Shift + Option + -`
In Microsoft Word, type `–` and let AutoCorrect convert it
In Google Docs, type `–` and use the automatic replacement if enabled
On iPhone or iPad, press and hold the hyphen key, then select `—`
On Android, press and hold the hyphen key, then select `—`
In HTML, use `—`
In Unicode, use `U+2014`
Copy and paste this character: `—`