Free Superscript & Subscript Generator – Unicode Small Text

How Unicode Superscript and Subscript Conversion Works

A superscript and subscript generator turns ordinary characters into their raised or lowered Unicode equivalents, so the result copies into any text box, caption, or spreadsheet cell without special formatting. This is different from the superscript button in a word processor, which only works inside that document. Because these are real Unicode characters, x squared written here survives being pasted into a tweet, a YouTube comment, a chat message, or a plain-text file. People reach for it to write chemical formulas like water with a lowered two, to show exponents in a post where rich formatting is unavailable, and to add footnote-style markers to text that has no footnote feature. The conversion uses fixed lookup maps. Superscript digits run from a raised zero through a raised nine, and there is a small set of superscript letters covering common cases. Subscript digits run from a lowered zero through a lowered nine, with a much smaller set of subscript letters. This is where honesty matters more than marketing. Unicode simply does not define a superscript or subscript form for every letter of the alphabet. There is no subscript b, c, d, f, and several others, and the superscript letter set has its own gaps. A tool that pretends otherwise either substitutes a wrong-looking lookalike or silently drops characters. This generator does neither: any character with no Unicode small form is left exactly as it is in the output, and the tool lists precisely which characters it could not convert, so you are never misled about what happened. There are three modes. Plain mode converts every convertible character in your input to the chosen script. Chemical mode is smarter: it scans for digits that come immediately after an element symbol and lowers only those, so water typed as H2O becomes H with a subscript two followed by O, while a standalone number stays normal. Maths mode targets exponents, converting a digit that follows a variable into superscript, so x2 becomes x with a raised two. Take the input x2 + y2 in maths mode. The two after x becomes a raised two, the plus and spaces are untouched, and the two after y becomes a raised two, giving x squared plus y squared as a single copyable string. Type CO2 in chemical mode and the two lowers to give carbon dioxide with a subscript two, while the C and O stay full size. Specific situations show the value. A chemistry student writing lab notes in a plain-text app types H2SO4 in chemical mode and gets sulfuric acid with both digits correctly lowered, something the app's editor could never do. A maths tutor posting on a forum that strips formatting writes E = mc2 in maths mode so the exponent renders as a raised two for every reader. A researcher adding footnote markers to a caption converts 1, 2 and 3 to raised digits so they read as reference numbers. A gamer or social user wanting a stylised small-text handle converts a nickname and immediately sees, from the unconverted-characters list, which letters came through unchanged so there are no surprises in the final look. The honesty about gaps is the whole point, because a wrong small character is worse than a normal one. When you paste a formula into a chemistry assignment, a subscript that is actually a lookalike glyph can be marked incorrect, so knowing exactly which characters converted lets you decide whether the result is fit for purpose. Rendering also depends on the destination font having the small glyphs; most modern fonts include the digits, but rarer subscript letters can show as boxes in older fonts, which is a display limitation rather than a conversion fault. For anything graded or published, read the unconverted list and check the pasted result. Everything runs locally in your browser, so your text is never uploaded, stored, or logged.

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