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Subscript Generator

Type text and get Unicode subscript characters for chemical formulas (H₂O, CO₂), math indexes (x₁, aₙ) and tiny lowered text. Characters that have no subscript form are flagged.

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Works in Instagram, TikTok, X (Twitter), Facebook, Discord, YouTube and most apps that accept emoji. These are Unicode characters, not formatting, so screen readers may not read them as normal words: use them for short decorative text.

How to use the Subscript Generator

Type or paste your text into the box.
Compare the styles: the main subscript version is at the top, other variations below it.
Press Copy next to the style you like.
Paste it into your bio, caption, post, comment or chat.
Check the note under the result for any characters that could not be converted.

Which characters have subscript forms?

Unicode includes subscript digits ₀-₉, the signs ₊ ₋ ₌ ₍ ₎ and 17 lowercase letters (a, e, h, i, j, k, l, m, n, o, p, r, s, t, u, v, x), mainly for chemistry, mathematics and phonetics. There are no subscript capital letters. The table lists every supported character.

Subscript character chart

Every character this generator converts, with the normal character on the left and the styled one on the right.

aₐeₑhₕiᵢjⱼkₖlₗmₘnₙoₒpₚrᵣsₛtₜuᵤvᵥxₓ0₀1₁2₂3₃4₄5₅6₆7₇8₈9₉+₊-₋=₌(₍)₎

Where styled text works

Place	Works?	Tip
Instagram and TikTok bio	Yes	Great for your name line or a short highlight
X (Twitter) posts and name	Yes	Styled characters may count as 2 toward the limit
Facebook posts and comments	Yes	Keep it to a few words for readability
Discord and WhatsApp	Yes	Both also have their own formatting shortcuts
Usernames and handles	Usually not	Most sites only allow plain letters, digits and _
Email subject lines	Sometimes	May look spammy and some clients show boxes

Frequently asked questions

How do I write H2O with a subscript 2?

Type H2O in the box and copy the result: H₂O. Capital letters stay normal and the digit becomes a Unicode subscript character, so it works in plain text, chats and spreadsheets.

Which letters have subscript forms?

Unicode has subscript versions of a, e, h, i, j, k, l, m, n, o, p, r, s, t, u, v and x, plus digits 0-9 and + − = ( ). There are no subscript capitals and no b, c, d, f, g, q, w, y or z.

What does the "closest match" style do?

It converts capital letters to their lowercase subscript form when one exists (for example N becomes ₙ). Letters with no subscript form at all stay unchanged.

Is this the same as subscript in Word?

No. Word subscript is formatting that is lost in plain text. These are real Unicode characters, so they keep their position wherever you paste them.

Can I use it for chemistry homework?

Yes, for formulas like C₆H₁₂O₆ or SO₄²⁻ (combine with superscript for charges). For printed documents, a word processor's subscript formatting may look neater.

Is it accessible?

Screen readers usually read subscript digits as "subscript two" or similar, which is understandable for formulas.

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