The Chemistry Conflict
Google Docs is equipped with an automatic formatting engine designed to make common typographical tasks easier. One of these features automatically detects when you type specific number and letter combinations that resemble chemical formulas (like H2O) or mathematical bases, and automatically shrinks and lowers the number, converting it into a subscript character. While this is helpful for a high school science report, it is incredibly annoying if you are writing technical documentation involving model numbers (like “Server-H2”), specific variables, or software versions where the number must remain standard, full-sized text on the baseline.
Disabling Automatic Subscript Formatting
To maintain exact control over your text sizing and stop Google Docs from automatically creating subscript characters against your will, you must disable the specific automatic substitution rule.
Open your Google Docs document. In the top menu bar, click on Tools. From the dropdown list, select Preferences. A dialogue window will appear on your screen. At the top of this window, switch from the General tab to the Substitutions tab. This tab displays a long list of automatic replacements (for example, replacing (c) with ©). Scroll through this list until you find the entries that are causing your specific problem (e.g., a rule that replaces “H2O” with “Hâ‚‚O”). You can either uncheck the box next to the rule to temporarily disable it, or click the small “x” on the far right side of the row to delete the substitution rule entirely. Click the blue OK button to save. Google Docs will no longer automatically format those specific strings into subscript.