What is the correct number of spaces after a semicolon?

After a semicolon, the correct number of spaces is one. This convention aligns with modern typing and formatting standards, which recommend using a single space after punctuation marks such as semicolons. The rationale behind this practice is rooted in readability and consistency; one space after a semicolon helps maintain a clean and organized appearance in written text while ensuring that it is easy to read.

When typing in professional and academic contexts, following this single-space rule helps to convey a polished and modern approach to writing. In contrast, multiple spaces after a semicolon can create unnecessary gaps that disrupt the flow of text and may lead to a cluttered look on the page. Keeping to one space enhances clarity and is the widely accepted practice in both print and digital formats.