Subscript Generator
Lowered digits and letters for formulas. Tap to copy.
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Subscript styles
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These are Unicode symbols, not fonts. Some apps and older phones show them as boxes, and screen readers may read them letter by letter or skip them, so keep names, important details and hashtags in plain text. Why, and what to do instead.
Chemistry and maths in plain text
Subscript digits let you write formulas anywhere: H₂O, CO₂, C₆H₁₂O₆, or variables like x₁ and aₙ. Type the formula normally (H2O) and the Subscript style lowers the numbers and the letters that have a subscript form, while capitals stay full size, which is exactly what chemical formulas need.
Only 17 subscript letters
Unicode's Superscripts and Subscripts and Phonetic Extensions blocks hold subscript a e h i j k l m n o p r s t u v x. There's no subscript b, c, d, f, g, q, w, y or z, and no subscript capitals, so those stay as typed. Digits 0–9 and the signs ₊ ₋ ₌ ₍ ₎ are all there.
When to use real formatting
If you're writing a document, a website or a paper, use the subscript button or <sub> tag instead: it keeps letters searchable and screen readers handle it better. These characters are for places like chats, spreadsheets cell labels and social posts. See the accessibility guide.
Frequently asked questions
How do I type H2O with a small 2?
Type H2O in the box and copy the Subscript style: H₂O. Capitals stay full size.
Why are some letters not subscript?
Unicode has subscript forms for only 17 lowercase letters. The rest stay normal size.
Do subscript characters work in Excel or Google Sheets?
Yes, you can paste them into cells as text. They will not work in formulas.