* Font: Different fonts have different sizes. A larger font will take up more space on a page than a smaller font.
* Font size: A 12-point font will use more space than an 11-point font.
* Margins: The amount of white space around the text (the margins) affects how many words fit on a page.
* Line spacing: Single-spaced text will fit more words per page than double-spaced text.
* Page size: A standard 8.5 x 11 inch page will hold more words than a smaller page.
To get a general idea:
* Assuming standard formatting: (12-point font, 1-inch margins, single-spaced, 8.5 x 11 inch paper) 800 words would likely be about 2-3 pages.
* Using a word processor: The easiest way to find out is to type your text into a word processor and check the page count.
Let me know if you have any other information that might help determine the page count!