Choosing Font Size and Line Spacing for Printed Academic Documents

Font size and line spacing are two of the few formatting choices that directly change how many pages a document runs to, which makes them tempting to shrink when a report or assignment is running long. Before optimizing for page count, though, it's worth checking whether your department or institution actually specifies a font, size, and spacing for the document — many thesis and project report guidelines are explicit about this (commonly something like 12pt with 1.5 or double spacing), and getting that wrong after a document is finalized and bound is a far more expensive fix than a few extra printed pages would have been.

Where there isn't a fixed requirement, readability is the real constraint to design around. Body text below about 10-11pt starts to strain the eye on paper, especially for someone reading several documents back to back, like an examiner or a coaching mentor marking a stack of submissions. Line spacing matters just as much if the document is meant to be annotated — a viva examiner or a reviewer writing margin comments needs more breathing room between lines than a document meant only to be read straight through, so 1.5 line spacing is a reasonable default for anything that expects handwritten feedback.

Font choice plays a smaller but real role too. Serif fonts like Times New Roman or Garamond are the traditional choice for long, printed body text, since the serifs give the eye a little more to track along a line at smaller sizes; sans-serif fonts like Arial or Calibri read cleanly at headings or larger sizes but can feel more cramped in dense paragraphs at 11-12pt. Whichever you pick, keeping it consistent through the whole document matters more than the specific choice — a font that changes partway through is one of the more obvious signs of a document stitched together from separate pieces.

It's also worth being deliberate about spacing before finalizing a document you're printing in bulk or in multiple copies, since the underlying page-count math is roughly linear: the standard baseline of around 500 words per A4 page assumes something close to single spacing at a normal body size, and moving to double spacing can push a fixed word count into roughly twice as many physical pages, each one billed at the per-page print rate and multiplied across every copy ordered.

As a general default, 11-12pt body text with somewhere between 1.15 and 1.5 line spacing is a legible middle ground for most academic documents unless a specific format sheet says otherwise. Checking the actual guideline before finalizing formatting is always worth the few minutes it takes, since reformatting a document after it's already printed and bound is the expensive version of this problem.