Super Boring Tools

Search tools

Find a tool by name or what it does.

Subscript Generator

Turn letters, numbers, and signs into subscript Unicode for formulas like H2O.

Every style updates live as you type. Nothing leaves your browser.

Subscript text
  • Subscript
    Lowered small characters
    ₕ₂ₒ ₐₙd Cₒ₂

Previews use sample text until you type something.

How to make subscript text

  1. Type your text

    Enter letters, digits, or math signs like plus, minus, and parentheses. Sample text previews the effect until you type.

  2. See it lowered live

    Supported characters shrink and drop below the baseline, so a formula like H2O reads with a small lowered 2.

  3. Copy the subscript

    Press copy to place the subscript text on your clipboard with a confirmation.

  4. Paste it anywhere

    Drop it into a document, chat, or post. It is plain Unicode, so the lowered look follows the text.

Why use this tool

Great for formulas

Digits and math signs all have subscript forms, so chemical formulas and math expressions like H2O read correctly without an equation editor.

Characters, not a font

Each supported character maps onto a real subscript Unicode character, so the lowered styling travels with the text instead of relying on a font.

Signs and parentheses included

Plus, minus, equals, and parentheses have subscript forms too, so ionic charges and grouped terms render cleanly.

Clear fallbacks

Letters without a subscript form are left unchanged so the rest of your text stays readable and mixed content still works.

Runs entirely in your browser

The conversion is a lookup on the page. Your text is never uploaded, and there is no account to create.

About this tool

A subscript generator converts the characters you type into small Unicode characters that sit below the baseline, the form used for the numbers in chemical formulas like the 2 in water or the counts in carbon dioxide. Unlike an equation editor that produces formatting only certain apps understand, this tool outputs plain Unicode text, which keeps its lowered look when you copy it into a document, a chat message, a post, or a form.

Unicode provides subscript forms for all ten digits, for the math signs plus, minus, and equals, for parentheses, and for a subset of letters. That covers the most common needs like formulas, ionic charges, and simple math notation. Letters that have no subscript form are left exactly as you typed them, so mixed content still works and nothing turns into an empty box. Because the result is ordinary text, it pastes cleanly into places where real subscript formatting would be stripped away.

This is handy for writing chemistry and math outside of a dedicated editor, or for adding lowered characters to a caption or note. For raised characters instead, use the superscript generator, shrink whole words with the tiny text generator, or explore more styles in the fancy text generator.

Frequently asked questions

How does the subscript generator work?
It maps each supported character you type onto its subscript Unicode form, a small character that sits below the baseline. These are real code points, not an image or a font, so the subscript text can be copied and pasted almost anywhere.
Can I write chemical formulas with it?
Yes. All digits and the common math signs have subscript forms, so formulas like H2O and CO2 render with correctly lowered numbers that you can paste into documents and messages.
Why are some letters not lowered?
Unicode only includes subscript forms for a subset of letters. Any character without one is left unchanged, so mixed content stays readable rather than showing empty boxes.
Where can I use subscript text?
Anywhere that accepts Unicode text, including documents, chat apps, social posts, and forms. Because it is plain Unicode, it carries its lowered look with it, with no equation editor needed.
Is my text uploaded anywhere?
No. Everything runs in your browser. Your text is processed on your device and never sent to a server, stored, or logged.

Related tools