At what page number would a short story become a novella and at what point does a novella become a book manuscript? Is there a specific length that the story has to be to achieve to use those terms?
The Science Fiction and Fantasy Writers of America gives these ranges:
- Short story: Fewer than 7500 words.
- Novelette: 7500 to 17499 words.
- Novella: 17500 to 39999 words.
- Novel: 40000 or more words.
Note that these are defined in terms of word count, not page count. The number of pages depends greatly on formatting, so is imprecise as measure of story length.