How many spaces are there between sentences?

How many spaces are there between sentences?

Always put exactly one space between sentences. Or more generally: put exactly one space after any punctuation. Here's a paragraph with one space between sentences: I know that many people were taught to put two spaces between sentences.

Is there a space between number and unit of measure?

Values of quantities are expressed in acceptable units using Arabic numerals and symbols for units. There is a space between the numerical value and unit symbol, even when the value is used in an adjectival sense, except in the case of superscript units for plane angle.

Do you put one or two spaces between sentences?

Unless you are typing on an actual typewriter, you no longer have to put two spaces after a period. Or a question mark. Or an exclamation point. The rule applies to all end punctuation.