Research guide
The Best Fonts for Scientific Posters and Figures
Readable fonts, recommended A0/A1 sizes, and clean pairings for scientific posters and research figures.
The best fonts for scientific posters are clean sans-serif families such as Helvetica or Arial, Lato, Source Sans, and Inter. Use one or two families at most, then create hierarchy with size and weight. The typeface matters, but the recommended font size for scientific posters matters even more: a good family still fails when the body is too small to read from two metres away.
Best fonts for scientific posters
| Font | Strength | Best use on a scientific poster | Watch for |
|---|---|---|---|
| Helvetica / Arial | Neutral and widely available | Headings, labels, body | Can feel generic without careful spacing |
| Lato | Friendly shapes and clear weights | Headings and short body text | Avoid very light weights in print |
| Source Sans | Open-source and highly readable | Full poster systems | Pair weights consistently |
| Inter | Clear on screens and modern printers | Figures, labels, digital posters | Test small print sizes before final export |
| Source Serif | Strong long-form reading | Text-heavy body panels | Do not mix with multiple other families |
These are good fonts for scientific posters because their letterforms remain clear at distance and across headings, captions, axes, and labels. Availability also matters: collaborators and print providers should be able to open the file without substituting a different font.
Why font choice matters on a scientific poster
A scientific poster is read from a distance — typically one to three metres at a conference. Unlike a paper or slide deck, a scientific poster cannot rely on the reader zooming in or scrolling. Every word must be legible at standing distance, under variable lighting, and often from an angle. The wrong font on a scientific poster turns readable results into visual noise. Choosing the right font is one of the simplest changes that makes the biggest difference in how professional a scientific poster looks.
Recommended font sizes for an A0 or A1 scientific poster
| Element | Starting size |
|---|---|
| Poster title | 72–120pt |
| Section headings | 42–56pt |
| Body text | 24–32pt |
| Figure labels | 22–28pt |
| Captions and references | At least 18pt |
The best font size for a scientific poster depends on viewing distance, column width, and the actual typeface. Use the table as a starting point, print a small-scale test, and stand back. Body text on a scientific poster should remain readable from roughly two metres.
For A1 scientific posters, use the lower end of each range only when the columns are narrow enough. For A0, the larger canvas does not justify adding more text — it gives the main finding more room to breathe. A common mistake on a scientific poster is shrinking the font to fit more content instead of cutting content to fit the font.
Font pairings that print cleanly on a scientific poster
The safest pairing for a scientific poster is not two dramatic typefaces. Use one sans family and vary weight:
- Lato Bold for section headings with Lato Regular for body.
- Source Sans Semibold for headings with Source Sans Regular for body.
- Helvetica Bold for headings with Helvetica or Arial Regular for body.
- Source Sans headings with Source Serif body only when panels contain longer prose.
A scientific poster with a single well-used font family always looks more cohesive than one with three or four competing typefaces. Weight and size create the hierarchy; adding fonts creates clutter.
Use tabular numerals in data tables when the family supports them. Keep axis labels and figure annotations in the same family as the poster body unless the scientific notation requires a specialized glyph set.
Fonts to avoid on a scientific poster
Not every font works at poster scale. Avoid these common mistakes on a scientific poster:
- Comic Sans or novelty typefaces that weaken academic tone and distract from results.
- Times New Roman at small sizes across wide poster columns — its serifs blur at distance.
- Thin font weights that disappear under projector light or low-quality printing.
- More than two font families — a scientific poster needs consistency, not variety.
- Low contrast between text color and the scientific poster background.
- Condensed body text forced into the layout to fit an extra paragraph.
When a scientific poster feels crowded, remove text before reducing the type size. A scientific poster is a visual conversation starter, not a paper printed at wall scale.
Fonts for figures and graphical abstracts
Research figures need the same font consistency as a scientific poster. Use one family across panel labels, axes, legends, pathway labels, and captions. Check that italics, Greek characters, subscripts, and symbols are available before committing to a font for your scientific poster or figure.
For editable SVG figures, either embed the font when your journal permits it or convert final labels to outlines after preserving an editable source copy. Always follow the target journal's production requirements. The fonts you choose for your figures should match the fonts on your scientific poster to maintain a unified visual identity across your conference materials.
How to test fonts before printing a scientific poster
Before sending your scientific poster to the print shop, test your font choices:
- Print a scaled version. Print the poster at 25% scale on A4 paper, hold it at arm's length, and check whether headings and body text are distinguishable.
- Check on screen at actual size. Zoom to 100% and verify that body text is crisp and labels are not cramped.
- Test in the export format. Export as PDF or SVG and open on a different computer to confirm fonts render correctly or are embedded.
- Ask a colleague to read it. A fresh pair of eyes catches readability issues that the author has become blind to.
These steps take ten minutes and prevent the most common font-related disasters at a scientific poster session.
Frequently asked questions
What font size should a scientific poster title use?
Use about 72–120pt for an A0 scientific poster title, then verify it remains readable from roughly two metres.
Should a scientific poster use serif or sans-serif?
Use sans-serif for headings and most body text on a scientific poster. Reserve serif for text-heavy panels when print quality and line length support it.
How many fonts should a scientific poster use?
Use one or two families at most on a scientific poster. Create hierarchy with size and weight instead of adding typefaces.
What is the most common font on a scientific poster?
Helvetica and Arial are the most commonly used fonts on scientific posters because they are widely available, neutral, and clear at all sizes. Lato and Source Sans are increasingly popular open-source alternatives.
Building the poster itself?
Skip the layout struggle. The Scientific Poster Generator sets the A0/A1 structure and size hierarchy so you can focus on the research message.
Related reading: Scientific color palettes for papers · 3 Minute Thesis: the one-slide guide