Scientific Poster Typography: Font Sizes, Families, and Readability

Start with a scale, then test it

For A0, a useful starting range is roughly 85–120 pt for the title, 34–44 pt for headings, and 24–32 pt for body text. Typeface proportions, column width, and viewing distance change the result, so a full-size proof outranks a rule.

• Set final dimensions first.
• Keep captions responsibly large.
• Edit copy before shrinking type.

Choose families for legibility

Select open letterforms, clear numerals, dependable weights, and full symbol support. One family is often enough; two can work when their roles are explicit. Thin, condensed, or decorative faces make paragraphs, axes, and references unnecessarily difficult.

• Use named styles consistently.
• Limit all caps to short labels.
• Control line length with columns.

Proof difficult content

Test equations, superscripts, Greek characters, affiliations, legends, and references. Print them at 100 percent and confirm embedded fonts in the PDF so a production computer cannot silently substitute another family or alter line breaks.

• Inspect export line breaks.
• Check similar-looking numerals.
• Open the PDF without source fonts.

A practical example

If a 36 × 48 inch poster needs 18 pt body text to fit, keep a readable size and edit background, methods, and references. The constraint reveals an editorial problem.

Use a template with a tested type hierarchy

Browse editable PowerPoint templates whose title, heading, body, and caption styles are separated, then adjust them to the event’s confirmed dimensions.

Sources and further reading

• Creating a Scientific Poster — National Institutes of Health
• Ten Simple Rules for a Good Poster Presentation — PLOS Computational Biology
• Presentation and publication skills: How to prepare a scientific poster — PubMed