Italic Letters (Italic Text)

An ordinary italic is a style a font applies to normal letters, and it vanishes the moment you paste the text somewhere that has no italic button: an Instagram caption, a TikTok bio, a YouTube comment, an X post. The letters on this page are different. 𝐸𝑎𝑐ℎ 𝑜𝑛𝑒 𝑖𝑠 𝑖𝑡𝑠 𝑜𝑤𝑛 𝑐ℎ𝑎𝑟𝑎𝑐𝑡𝑒𝑟: 𝐴 is not an A drawn slanted, it is U+1D434, a separate code point that any font with maths support draws as an italic A. Because the slant lives in the character itself, it travels wherever the text goes.

They come from the Mathematical Alphanumeric Symbols block, added in Unicode 3.1 in 2001 so that mathematicians could keep 𝐴, 𝑨, 𝐀 and 𝔸 apart as different variables in plain text. Unicode is clear that they exist for that purpose and not for styling prose, which is why they behave oddly in places that expect normal letters (more on that below). Social media simply adopted them as the only italics that paste anywhere.

This page is the dedicated set for the four slanted alphabets. The upright styles have pages of their own: Bold Letters for 𝐀𝐁𝐂 and the bold digits 𝟏𝟐𝟑, Cursive Letters for the looping script 𝒜ℬ𝒞 that people often call italic but Unicode calls script, Sans-Serif Letters for 𝖠𝖡𝖢, and Letter Emoji & Alphabet Symbols for the whole zoo of fancy letters at once.

The four italic alphabets, and the hole at h

Italic 𝐴𝑎 is the serif italic of a book: 𝐴 𝐵 𝐶 and 𝑎 𝑏 𝑐, the one that reads as a real italic in running text and as a variable in a formula (𝑥, 𝑓(𝑥), 𝐸 = 𝑚𝑐²). Bold italic 𝑨𝒂 is the same shape with more weight, 𝑨 𝑩 𝑪 𝒂 𝒃 𝒄, and reads loudest in a feed. Sans-serif italic 𝘈𝘢 drops the serifs, 𝘈 𝘉 𝘊 𝘢 𝘣 𝘤, for a cleaner, more modern slant, and sans-serif bold italic 𝘼𝙖 is its heavy form, 𝘼 𝘽 𝘾 𝙖 𝙗 𝙘, the closest thing to a headline.

Each alphabet has 26 capitals and 26 small letters, 52 characters, with one famous exception. The slot where the italic small h should sit, U+1D455, is permanently empty, because Unicode already had an italic h before the maths alphabets arrived: ℎ, the Planck constant sign, U+210E. Unicode never encodes the same letter twice, so ℎ is the italic h, and it sits in its alphabet position in the grid above. A generator that gets this wrong leaves an upright h in the middle of a word: ℎ𝑒𝑙𝑙𝑜 is right, h𝑒𝑙𝑙𝑜 is the tell-tale of a careless converter. The other three italic alphabets have no such gap.

A few relatives belong beside them. ℏ is the h with a bar, the reduced Planck constant, drawn as an italic h with a stroke. 𝚤 and 𝚥 are the italic dotless i and j, made so that a hat or a bar can sit on the letter without colliding with the dot. Italic Greek exists too (𝛼 𝛽 𝛾, bold 𝜶 𝜷 𝜸), for the Greek variables of physics; it lives on Greek Letters. And there are no italic digits at all in Unicode: bold 𝟏𝟐𝟑, sans-serif 𝟣𝟤𝟥, monospace 𝟷𝟸𝟹 and double-struck 𝟙𝟚𝟛 exist, italic ones do not, so italic text with numbers always mixes in plain or bold digits.

Where italic text works: Instagram, WhatsApp, Discord, X

Instagram, TikTok, X, Threads, YouTube, LinkedIn and Facebook offer no italic formatting in bios, names, captions or comments, so these characters are the only way to get 𝑖𝑡𝑎𝑙𝑖𝑐 𝑡𝑒𝑥𝑡 there, and they show correctly on current iPhones, Android phones and desktop browsers. Usernames are the exception: Instagram handles, X handles and Discord usernames accept only plain letters, digits and a few signs, so the italic letters work in the display name and the bio, not in the @handle.

Messaging apps have their own italic markup and it is the better tool there. In WhatsApp, put an underscore on each side of the text, like _this_, and it sends in true italics; asterisks make bold and tildes strike through. Discord, Reddit and most Markdown editors use a single asterisk or underscore, this or _this_, and three asterisks for bold italic. Telegram uses two underscores, __this__, or the formatting menu after selecting text, and Slack uses underscores. Real italics are readable by everyone and searchable; the Unicode letters are for the places that have nothing else, and for names and statuses where markup is not applied.

Three honest drawbacks. Screen readers, VoiceOver and TalkBack included, may read ℎ𝑖 as "mathematical italic small h i", letter by letter, or skip it, so a bio written entirely in italic letters is hard going for blind readers; keep it to a name or a short phrase. Search and find-in-page do not match them to normal words, although Unicode compatibility normalisation (NFKC) maps every one of them back to its plain letter, so some systems silently treat them as ordinary text. And each of these letters lies outside the first Unicode plane, so X counts it as two characters against the 280 limit, and very old devices and some fonts show boxes or question marks instead.

How to type italic text: markup, HTML, CSS, LaTeX and generators

Where a real italic exists, use it: Ctrl+I (Cmd+I on a Mac) in Word, Google Docs, Gmail and most editors; _underscores_ in WhatsApp; asterisks in Discord, Reddit and Markdown. On the web, wrap the text in an em element for emphasis or an i element for a title or a foreign word, or give any element the CSS rule font-style: italic. In LaTeX, \textit{text} sets italic prose and \emph{text} emphasis, while single-letter variables in maths mode come out italic by themselves; \mathit forces it for a whole word.

For the Unicode letters, the quickest way is to tap them here or copy a ready phrase from the combos below. In Microsoft Word you can type the code and press Alt+X: 1D434 then Alt+X gives 𝐴. A generator or a script does it with arithmetic, because each alphabet keeps the ASCII order: the capitals start at U+1D434 for italic, U+1D468 for bold italic, U+1D608 for sans-serif italic and U+1D63C for sans-serif bold italic, with the small letters 26 places later, and the single special case h → ℎ.

Mixing styles is part of the look. A bold italic word inside an italic sentence gives real emphasis, 𝑡ℎ𝑒 𝒐𝒏𝒆 𝑡ℎ𝑖𝑛𝑔, and a sans-serif bold italic headline above a plain bio reads like a title. Keep the fancy letters short and the rest plain, and the page stays readable for everyone.