Unicode-Based No Signup Free to Use

How to Type CO₂ and H₂O with Subscript (Copy & Paste)

Chemistry formulas like CO₂ and H₂O use subscript numbers to show how many atoms of each element are present. Instead of faking this with small font sizes, you can use real Unicode subscript characters that copy and paste correctly into documents, slides, and emails.

Quick Steps: CO₂ and H₂O with Subscript

Step What to Do
1 Open the Subscript Generator and type your formula (for example CO2 or H2O).
2 Select Subscript, turn on Formula mode and Numbers Only: On, then click Copy.
3 Paste the result (CO₂ or H₂O) into Word, PowerPoint, Google Docs, or your email editor.

Why Use Unicode Subscript for Chemistry?

  • Subscripts stay attached to the numbers when you copy and paste.
  • Formulas look the same across Word, Google Docs, PowerPoint, and many other apps.
  • You don’t need to adjust font sizes or rely on app-specific formatting menus.

Step 1: Generate CO₂ and H₂O with the Subscript Generator

  1. Open the Subscript Generator in your browser.
  2. In the input box, type CO2 or H2O.
  3. Select Subscript as the conversion type.
  4. Turn on Formula mode and set Numbers Only: On so that only numbers become subscript.
  5. Click Generate (or keep Auto on) and then click Copy.

You will get:

  • CO2 → CO₂
  • H2O → H₂O
  • C6H12O6 → C₆H₁₂O₆

Step 2: Paste into Word, PowerPoint, Google Docs, or Email

  1. Open your document, slide, or email editor.
  2. Click where you want the formula to appear.
  3. Paste the copied text (Ctrl + V on Windows, Cmd + V on Mac).
  4. Optionally apply bold or italic styling in your editor.

The subscript numbers will remain attached to the letters, so your formulas stay correct when you edit or move them.

Quick CO₂ and H₂O Copy & Paste

If you just need fast copies, you can copy directly from here:

  • CO₂ – carbon dioxide
  • H₂O – water
  • C₆H₁₂O₆ – glucose

For other formulas, use the Subscript Generator so you don’t have to search for each symbol individually.

Need More Chemistry Subscripts?

Use the Subscript Generator to convert any formula (CO₂, H₂O, C₆H₁₂O₆, and more) into Unicode subscript for copy and paste.

Open the Subscript Generator