How to use the Subscript Generator
- Type or paste your text into the box on the left.
- Adjust the options above if you need to. The result updates as you type.
- Click Copy result or Download to use your result.
What you can use it for
- Write H₂O, CO₂ and other formulas
- Add indices in maths notes
- Style text in posts
Private by design
The Subscript Generator runs entirely in your browser. Your text and files are never uploaded or stored on a server, so it is safe for work documents and personal information. It is free, with no sign-up and no limits on how often you use it.
Frequently asked questions
Why do some letters not change?
Unicode only has subscript versions of some letters. All digits are supported.
Can I write chemical formulas?
Yes. Type H2O and the 2 becomes ₂. Keep capitals in normal text if needed by converting only the numbers.