Subscript Generator
Make subscript numbers for formulas, or convert supported letters and operators. Copy the result directly; unsupported characters stay intact.
Numbers-only mode keeps chemical element letters intact. Letter mode supports a e h i j k l m n o p r s t u v x; other letters stay unchanged. Your text stays in this browser.
Subscript Generator examples
Every row below shows the word H2O + CO2 converted by this page’s styles.
| Style | Example | Support |
|---|---|---|
| Subscript | H₂O ₊ CO₂ | Medium |
Copy and paste the alphabet
Compare every letter and number, or copy a whole alphabet. Characters without a matching Unicode form stay unchanged: script and blackletter have no styled digits, and small-text alphabets have gaps.
Subscript alphabet
- Uppercase A–Z
- ABCDEFGHIJKLMNOPQRSTUVWXYZ
- Lowercase a–z
- ₐbcdₑfgₕᵢⱼₖₗₘₙₒₚqᵣₛₜᵤᵥwₓyz
- Numbers 0–9
- ₀₁₂₃₄₅₆₇₈₉
How to use the subscript generator
Type a formula or short text. Numbers-only mode lowers digits while preserving chemical element letters, so H2O becomes H₂O and C6H12O6 becomes C₆H₁₂O₆. Copy the output into your note, message or document.
For variable indices, switch to supported letters, numbers and operators. This converts x1 to ₓ₁. If only the index should sit below the baseline, enter just “1”, copy ₁ and append it to a plain x.
More on this: Compare small caps and superscript
Which subscript letters and numbers exist?
This tool supports every digit from 0 through 9, plus + − = ( ). Its lowercase letter mapping covers a, e, h, i, j, k, l, m, n, o, p, r, s, t, u, v and x. There is no complete Unicode subscript Latin alphabet.
Uppercase letters and unsupported lowercase letters remain as entered. A lookalike from another script would change the meaning of the text, so it is not used to fill a missing letter.
More on this: See the subscript alphabet
Subscript text versus document formatting
These are separate Unicode characters, so the lowered appearance survives copying into many plain-text fields. They are not HTML <sub> tags or a font-size setting. The receiving app and its fonts decide how each character looks.
An equation editor or a document’s subscript formatting supports arbitrary letters and a selected part of a formula. Use that for complex notation, chemical charges or publication layouts. Keep a plain-text explanation nearby if the notation must be accessible to everyone.
What people use it for
- Chemical atom counts such as H₂O and CO₂
- Variable indices such as x₁ in plain-text notes
- Logarithm bases and short technical labels
Subscript Generator: questions and answers
How do I write H₂O without changing the H and O?
Leave Numbers only selected and enter H2O. Only the 2 changes, giving H₂O. Copy the result with the output button.
Why does the generator leave some letters unchanged?
Unicode has no complete subscript alphabet. Unsupported letters and all uppercase letters stay intact rather than being replaced by an unrelated lookalike.
What is the difference between subscript and superscript?
Subscript sits below the baseline, as in H₂O. Superscript sits above it, as in x². The small-text tool includes a superscript option.
Can I subscript only part of a word?
Enter only the portion you want lowered, copy it, then join it to the plain portion in the destination field. For complex formulas, use an equation editor.
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