Instructions cover Windows PCs, Macs, iPhones, Android devices, and HTML.
A tilde appears above an underscored blank space.
Now pop in the letter to be accented.

Lifewire / Derek Abella
Keyboard shortcutsvary by platform and operating system.
To locate the character map in Windows 10, selectStart>WindowsAccessories>Character Map.
Alternatively, go to the search box in the Windows taskbarand entercharacter map.

grab the letter you want and paste it into the document you’re working on.
For example:
InHTML, the characters with tilde marks may appear smaller than the surrounding text.
You may wish to enlarge the font for those characters in some circumstances.

Slide your finger to the character with a tilde and lift your finger to select it.
FAQ
The English pronunciation for “tilde” is “til-duh.”
When used in math, a tilde is meant to show approximate values.
For example, to show something is “approximately five” you would use “~5.”