How do I write H₂O or CO₂ in a chat?

Type just the number here — 2 converts to ₂ — then paste it after the letter. All digits 0-9 have proper Unicode subscript forms, so any chemical formula is possible.

Why do not all letters have subscripts?

Unicode only defines subscript glyphs for part of the alphabet (a, e, h, i, j, k, l, m, n, o, p, r, s, t, u, v, x). The rest pass through unchanged — a limitation of the standard, not the tool.

Will subscripts work in Word or Google Docs?

They paste in fine, but for formal documents use the built-in subscript formatting (Ctrl+, / Cmd+,) — it is more robust for editing and accessibility than Unicode characters.

How do I copy and paste subscript text?

Type the part you want lowered — usually just the numbers — click copy, then paste it next to the rest of your text. The result is plain Unicode text, not formatting, so subscript copy and paste works in chats, posts and docs alike.

Subscript Generator

Subscript text for H₂O-style chemistry and indices.

Type digits for chemistry: H2O → H₂O. Letters a, e, o, x and more also convert.

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About the Subscript Generator

Chemistry teachers, students and science fans all hit the same wall: H₂O is easy to write on paper, impossible in a chat box. This generator converts your text into Unicode subscript characters, so chemical formulas, math indices and variable notation survive pasting into any plain-text field.

All digits (₀-₉), the math signs (+, −, =, parentheses) and seventeen letters have official subscript forms and convert automatically — enough for every formula from CO₂ to C₆H₁₂O₆. Letters without a Unicode subscript pass through unchanged.

How to use it

1Type the characters you want lowered — usually digits or letters.
2The subscript version appears instantly.
3Click copy and paste it into your formula or post.

Subscript Generator

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