Proportional To Symbol (∝) on Keyboard — How to Type It (Windows & Mac)
The proportional to symbol (∝) is used in math, physics, and science notes to mean “changes with” or “is related to.”
For example, y ∝ x means when x increases, y increases too (in a consistent relationship).
People often confuse ∝ with ∞ (infinity) because they can look similar in some fonts. This guide shows the fastest ways to type ∝ on Windows, Mac, Word, Excel, PowerPoint, Google Docs, Google Sheets, iPhone/Android, and Chromebook.