How to Type ĩ (I with tilde) on LaTeX

Published June 6, 2026, 2 min read

Typing ĩ (i with tilde) on LaTeX takes a few seconds once you know the trick. The short answer is \~{\i}. Read on for step-by-step instructions, the uppercase Ĩ and what to do when a method does not work.

ĩ on LaTeX: \~{\i}

Ĩ on LaTeX: \~{I}

Or copy it:

Method 1: LaTeX command

Write \~{\i} in text mode. Load \usepackage[T1]{fontenc} for correct hyphenation and copy-paste from the PDF.

Method 2: Type the character directly

Since 2018 pdfLaTeX reads UTF-8 by default, so you can paste ĩ into your source. On Overleaf, set the compiler in Menu → Compiler.

Method 3: In math mode

For a variable with this accent, use $\tilde{i}$ . Math accents are for symbols, so use the text command for words.

How to type the capital Ĩ

The uppercase form works the same way with Shift added where a letter is typed.

LaTeX command

Write \~{I} in text mode. Load \usepackage[T1]{fontenc} for correct hyphenation and copy-paste from the PDF.

Type the character directly

Since 2018 pdfLaTeX reads UTF-8 by default, so you can paste Ĩ into your source. On Overleaf, set the compiler in Menu → Compiler.

About the letter ĩ

ĩ is Unicode U+0129, named LATIN SMALL LETTER I WITH TILDE. It is used in Vietnamese. A wavy line above a letter. Spanish uses it for ñ, Portuguese for nasal vowels (ã, õ), Estonian for õ, and Vietnamese for the broken rising tone. See the ĩ character page for every code and shortcut.

Troubleshooting

Accents on i and j need the dotless forms \i and \j in old LaTeX; modern LaTeX handles this automatically.
If the letter is missing in the PDF, the font lacks it. Switch to XeLaTeX or LuaLaTeX with a broader font.
Wrap commands in braces when the next character is a letter: \'{e}x, not \'ex.

Frequently asked questions

What is the shortcut for ĩ on LaTeX?

\~{\i}.

Can I just copy and paste ĩ?

Yes. Click the copy button above, then paste with Ctrl+V on Windows and Chromebook, Cmd+V on a Mac, or touch and hold and choose Paste on a phone.

What is the Unicode code for ĩ?

U+0129. In HTML it is ĩ.

Related guides

All accent shortcuts for LaTeX