Superscript, Subscript, and Small Caps in Unicode

Tiny letters in a bio aren't Arial at 8px. Instagram doesn't let you pick 8px. Those ˢᵐᵃˡˡ shapes are separate Unicode characters: superscripts plus a grab bag of small-cap lookalikes from phonetic and modifier blocks. Subscripts live in the same neighborhood and fail in the same ways.

People call all of it "small text." I'd rather split the pile, because superscript ² is a real math character with a job, and ᴀ is a small capital that wandered in from linguistics. Mix them in one word and you get a ransom note that also fails search.

Superscript and subscript had day jobs

Unicode includes a handful of superscript digits and letters because footnotes needed them, and because SI units plus "2nd" jokes needed ² and ³. A full English alphabet in superscript doesn't exist as a clean, complete set. Generators fake the gaps with phonetic modifiers (like ʰ) that only resemble letters.

That's why some words look even, then one letter jumps in size. The spare was never drawn as a matching superscript. Unicode's superscripts and subscripts chart is a short PDF. Count the holes. That's your aesthetic, leaking.

The superscript tool and the small text tool on this site are two different lookups. One leans on superscript/modifier letters. The other leans on small capitals. Neither shrinks a font. Both paste as new code points.

Small caps that aren't a font feature

Real small caps are a typeface feature: the font draws a shorter M with the weight of a capital. Unicode "small capitals" (ᴀʙᴄ in the phonetic extensions) were meant for dictionary labels, not for branding. Weight and width don't match your UI font. They look like a different family crashed the bio.

I still use them for a one-word label. I wouldn't set a paragraph. Reading a whole sentence in mixed small caps is how you get a headache and a VoiceOver sermon. Same access warning as the Instagram bio guide: garnish, not the address.

Missing letters are a design constraint

Q and X are the usual gaps in amateur charts, with a couple of other letters missing depending which block the generator raided. A tool that "always outputs something" is substituting a lookalike or leaving a normal letter in the middle. That normal letter shouts. You'll see it immediately in HELLO vs ʜᴇʟʟᴏ if L is missing in one set. Check the output before you print it on a poster. Posters don't get a second paste.

Digits vary too. True superscript digits exist for 0-9 in some ranges. Small-cap digits mostly don't. Mixing 2026 with ᴀᴄᴄᴏᴜɴᴛ looks like two fonts glued together, because it's two blocks glued together.

Where tiny text still earns its keep

A footnote vibe in a caption. A fake "fine print" joke (don't use it for actual legal fine print, please). A chemical-ish gag with subscripts, knowing you'll only have a few real subscript digits. Discord names sometimes allow these when they reject emoji spam. Sometimes they don't. Test.

For body copy, just write smaller in an app that has a size control. That's an actual size. Unicode tiny is a costume. Costumes fail in tofu-prone apps, same as script. See why apps drop fancy letters.

Phonetic modifiers aren't your brand type

Those tiny ʰ ʲ ʷ letters exist so linguists can mark aspiration and rounding. They sit in modifier blocks because they attach, in theory, to a transcription. We steal them as fake superscript because the real superscript alphabet is full of holes. A phonetician looking at your bio will twitch. That's a small audience. The bigger audience is a font that drew ʰ for a dictionary and never kerned it against a small-cap ᴛ.

If your whole vibe is "tiny pretty type," you're fighting Unicode's inventory. A picture of the word, or a real font in an image, will match. Paste will not. I still ship the paste toy because that's what people type into search. Just don't be shocked when Q is missing and X looks like a different species.

One more practical bit: some mail apps convert superscript digits in subject lines, or strip them, which is how I lost a "2nd chance" joke to a client that stored subjects as ASCII and only restored the digits by accident. If the subject is the joke, send a backup in the body in normal numbers, because Unicode tiny is a costume and costumes fail in tofu-prone apps the same way script fails. A phonetician looking at ʰ in your bio will twitch, and that's a small audience. The bigger audience is a font that drew ʰ for a dictionary and never kerned it against a small-cap ᴛ, so the word looks like two families glued together. That's because they're two families.

I still wouldn't set a paragraph in mixed small capitals, because reading a whole sentence that way is how you get a headache plus a VoiceOver sermon about phonetic modifiers that were drawn for a dictionary, not for a bakery bio. True superscript digits exist for a handful of numbers while small-cap digits mostly don't, so mixing 2026 with ᴀᴄᴄᴏᴜɴᴛ looks like two fonts glued together, which they already are. If your whole vibe is tiny pretty type, you're fighting Unicode's inventory, and a picture of the word will match across phones in a way paste never will. Check the output before you print it on a poster, because posters don't get a second paste when Q went missing and the generator left a shouting Latin letter in the hole.

Common Questions

Why is one letter huge in my small-caps word? That letter didn't exist in the set, so the tool left a normal character. It's honest, and it's ugly. Pick a different word or a different style.

Is superscript better for bios than small caps? They're both wrong characters. Superscript is even skinnier at bio size. Small caps usually hold a bit more ink. I still wouldn't style a phone number in either.

Can I use this for real math? For a quick ² or ₃ in a chat, maybe. For a paper, use a real equation editor. These characters don't do layout. They also don't do stacked fractions.

Will it copy into a Word doc as tiny Arial? It'll copy as those Unicode letters. Word may or may not have glyphs. It won't become 8pt Arial unless you restyle it yourself.

Tiny is a different character, not a slider. Use it where a costume helps. Keep the facts in letters a phone already knows how to say out loud.