How many spaces should you put after a period following an abbreviation?

The standard formatting guideline for typing after a period following an abbreviation is to use 0 spaces. In modern typing conventions, especially with the adoption of typewriters fading, the practice has shifted from using two spaces after a period to utilizing a single space, or in the case of following an abbreviation, no space at all.

This practice helps maintain a clean and professional appearance in documents. Abbreviations are typically followed directly by the next word, ensuring clarity and fluidity in reading. Therefore, not adding any extra space after the period of an abbreviation allows for a more streamlined and contemporary format, which is preferred in most professional and educational settings today. The evolution of typography has led to this practice being widely accepted, moving away from the traditional typewriter rules that advocated for two spaces after periods.