People searching for a 'superscript and subscript generator' usually want one tool that does both directions — which the subscript generator and superscript generator cover between them. But whichever tool you use, the results depend on which characters Unicode actually defines. This guide is the full map.
Knowing the gaps up front saves confusion when a word comes out with one or two normal-size letters in the middle.
Numbers: both complete
Digits 0–9 have a full set of both superscript (⁰¹²³⁴⁵⁶⁷⁸⁹) and subscript (₀₁₂₃₄₅₆₇₈₉) forms, plus + − = ( ) in both. This is why exponents (x²) and chemical formulas (H₂O) always convert cleanly.
Superscript letters: nearly complete lowercase, partial capitals
Lowercase superscript covers a–z with one historical gap that most tools fill with a look-alike. Capitals are only partly defined — there's no superscript form for several of them, so words with capitals come out mixed.
Subscript letters: sparse
Subscript defines only a handful of lowercase letters — a, e, h, i, j, k, l, m, n, o, p, r, s, t, u, v, x — and no capitals. Any other letter stays normal size. Subscript is really a number tool with a few letters attached.
What a good generator does with gaps
When there's no Unicode form for a character, the tool should leave your original letter untouched rather than swap in a symbol from another alphabet that only looks close. A normal letter in a styled word is honest; a wrong glyph is misleading. See Unicode, explained for why the blocks are incomplete.