H₂O · Lowered · Indices · Tiny

Subscript Generator

By Abdullah · Updated July 18, 2026 · LinkedIn ↗

Turn letters and numbers into lowered ₛᵤᵦₛ𝒸ᵣᵢₚₜ characters — H₂O, CO₂, x₁ — that you can copy and paste into any app, document or bio. Free and instant. Need raised text instead? Use the superscript generator.

Tap Copy next to any style. Nothing you type is stored or sent anywhere.

What is subscript text?

Subscript is text that sits below the baseline — the small 2 in H₂O or the index in x₁. Outside word processors there is usually no button for it, which is where Unicode steps in: a set of dedicated subscript characters, added for chemistry and mathematics, carry the lowered position inside the character itself. Paste ₕᵢ into any chat and it stays lowered, because it is lowered — no formatting involved. The full mechanics are covered in Unicode explained.

All ten digits have subscript forms, along with +, −, =, parentheses and a modest set of lowercase letters — enough for formulas, indices and short decorative words.

How to make subscript in 3 steps

1. Type your text

H2O becomes H₂O as you type — digits always convert.

2. Pick subscript

Compare against superscript and small caps live.

3. Copy & paste

Paste into documents, chats, spreadsheets or bios.

Where subscript characters shine

Chemistry — H₂O, CO₂, C₆H₁₂O₆, CH₄: every common formula types cleanly in plain-text fields, lab-group chats and file names where an equation editor cannot follow.
Math indices — sequences (x₁, x₂ … xₙ), matrix entries (a₁₂) and log bases (log₂).
Physics and engineering — v₀ for initial velocity, T₁/T₂ states, R₁ in circuit notes.
Aesthetic accents — a lowered word like ₛₒfₜ reads as a whisper below the line, a subtler cousin of the superscript bio trend.
Nick decorations — pair a normal name with a tiny lowered tagline in Discord about-me fields.

Unicode covers only some lowercase letters in subscript (a, e, h, i, j, k, l, m, n, o, p, r, s, t, u, v, x). Letters without a form — including all capitals — stay normal size, so formulas with digits convert far better than sentences.

Subscript vs. superscript at a glance

	Subscript	Superscript
Position	Below the baseline	Above the line
Classic use	H₂O, x₁, log₂	x², 1ˢᵗ, footnote ¹
Digit coverage	Complete (₀–₉)	Complete (⁰–⁹)
Letter coverage	17 lowercase letters	25 lowercase + some capitals

Chemistry often needs both at once — Ca²⁺ uses superscript for the charge while the formula count sits in subscript. Keep both tools open and mix freely; the characters combine without conflict.

Ready-to-copy subscript examples

ChemistryC₆H₁₂O₆ + 6O₂

Math indexx₁ + x₂ = x₃

Aestheticₛₜₐy ₛₒfₜ

These are static samples. Type your own formula above to convert it live.

Related text effects

Superscript

x²

Raised tiny characters.

Small Text

ᴛɪɴʏ

The whole miniature family.

Underline

u̲n̲d̲e̲r̲

Lines under any text.

Subscript FAQ

What is a subscript generator?

It converts normal text and numbers into Unicode subscript characters — tiny glyphs that sit below the line, like the 2 in H₂O. Because they are real characters, not formatting, they survive copy and paste into any app.

How do I type H2O with a small 2?

Type H2O into the generator and copy the result: H₂O. All ten digits have true subscript forms, so any chemical formula or numeric index converts perfectly.

Why do some letters stay big?

Unicode encodes subscript forms for only 17 lowercase letters and no capitals — they were added for phonetics and science, not as a full alphabet. Any letter without a subscript form passes through unchanged.

Can I combine subscript and superscript in one message?

Yes. They are independent characters, so Ca²⁺ and H₂O can sit in the same sentence. Use this tool and the superscript generator together and paste both results into place.

Is the subscript generator free?

Yes — completely free with no sign-up and no limits. Everything runs in your browser and nothing you type is stored.

Built & maintained by Abdullah, a developer focused on fast, privacy-first web tools. About the project · LinkedIn ↗

Where to go next

Subscript pairs naturally with the superscript generator — most scientific notation needs both. The small text generator rounds out the miniature family with small caps, and the text effects hub holds every other structural effect from wide to cursed. For why 17 letters exist in subscript and the rest never made it, see Unicode explained.