This is only for Windows. On macOS, you can just use Option+[dash] for en dash and Option+Shift+[dash] for em dash. On Linux, it may differ depending on what IME you use.
Name | Key or Alt Code | Example |
Dash or hyphen | dash key on the key board | This is what-a-ma-call-it. |
En dash | 0150 | In place of to as in 9–5. |
Em dash | 0151 | Break up the sentence—if you know what I mean. |