Subscript Generator

Turn letters and numbers into small subscript text for formulas, notes, labels, and copy-and-paste writing.

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Simple process

How It Works

1

Add Your Text

Type a formula, label, number, or short line.

2

Choose What Changes

Use Letters and numbers or keep the change to Numbers only.

3

Check the Result

Read the live subscript version beside your original text.

4

Copy or Save

Copy the finished text or download it as a text file.

At a glance

Quick answer

Type a formula or short label to turn supported letters and numbers into subscript text. Copy the result or save it as a text file. Characters without a matching subscript form stay unchanged.

Before you start

Supported inputs and results

InputStatusPossible result
Letters and numbersWhen supportedSmall text below the normal line
Numbers onlyOptionalNormal words with smaller numbers
Unsupported charactersKept as enteredA readable complete line
Copy or saveAvailableCopied text or a text file

What to expect

  • Not every letter has a matching subscript character.
  • Your original and result stay visible together.
  • The look can vary with the font used by another app.
  • Your text stays in the current browser tab.

Live result

See the subscript version change as you type.

Two easy modes

Change letters and numbers, or numbers only.

Ready examples

Start quickly with formulas and numbered labels.

Copy or save

Copy the line or keep it as a text file.

Make clear subscript text as you type

Type, check, and copy

Type a formula or short label and the supported letters and numbers appear below the normal text line. Choose whether to change letters and numbers or numbers only.

Copy the result, save it as a text file, or turn supported characters back into normal text.

Why some characters stay normal

Not every letter has a matching subscript character. Unsupported characters stay unchanged, and the final look may vary slightly with the font used by the app where you paste it.

Easy to check before copying

Your original text and finished subscript stay side by side, so you can review every character.

  • Live subscript preview
  • Letters and numbers mode
  • Numbers only mode
  • Copy, save, and return-to-normal choices
Checked by our team

Testing information

Last tested
July 29, 2026
Tested with
Letters, numbers, formulas, spaces, and common signs
Result quality
Matches the supported characters shown in the result

See how we test our tools

Official sources

We use official help pages to check platform rules and keep this page clear.

Frequently Asked Questions

Type your text in the first box. The matching subscript letters and numbers appear in the result box automatically.
Yes. Type H2O or CO2, or tap either quick example to create the copy-ready version.
Yes. Choose Numbers only to keep the words normal while supported numbers and signs move below the line.
Yes. Use Back to normal to restore the supported subscript characters.
Yes. Paste it into any field that accepts normal text. Some apps and fonts may display the characters a little differently.

Use it with care

Keep formulas and labels short enough to read clearly, and check the pasted result in the app where you plan to use it.