NIH font size settings define how legible lab notes, protocols, and grant proposals look on screen and in print. Choosing the right base size and scaling options helps researchers read dense scientific text without unnecessary eye strain.
This guide explains common NIH font size expectations, compares typical settings, and shows how to apply them in reports, slides, and web publishing. Use these patterns to make your documents clearer and more accessible.
| Setting | Typical Use | Recommended Size | When to Adjust |
|---|---|---|---|
| Body text in grant applications | Main narrative, methods, aims | 11–12 pt Times New Roman or Arial | Follow funder limits; increase for readability review |
| Headings and section titles | Hierarchical navigation | 14–18 pt, bold, sans-serif | Use larger sizes for print posters |
| Table and figure labels | Captions and diagrams | 10–11 pt | Shrink for dense tables; raise for wall posters |
| Slide presentation body | Onscreen readability | 18–24 pt | Increase when room permits |
| Web content and NIH portals | Responsive design | 16–18 px base, relative units | Test on mobile and desktop |
Font choice and readability for NIH documents
Sans-serif for slides and screens
Sans-serif fonts such as Arial, Helvetica, or Calibri work well for slides, dashboards, and web interfaces. They render cleanly on monitors and remain legible at larger sizes during presentations.
Serif for dense grant text
For lengthy grant text or formal reports, serif fonts like Times New Roman or Georgia can improve scanning. Maintain a stable 11–12 pt base so reviewers stay comfortable during long reads.
Accessibility and contrast considerations
Minimum size for accessibility
Ensure body text never drops below 11 pt in print and 16 px on screen. Pair sufficient size with strong contrast, such as dark gray text on light backgrounds, to support users with low vision.
Testing with users
Run brief usability checks where teammates read a sample page at the intended size. Revise if people frequently squint, zoom, or ask for clarification during meetings.
Responsive design for web and portals
Relative units and viewport scaling
Use relative units like rem or em for web text so NIH portals remain readable when users zoom or set custom browser defaults. Test across devices to confirm headings and body blocks reflow gracefully.
Interactive components
Increase tap targets and label text in forms, tooltips, and modals. Keep interface labels at least 14 px and interactive text clearly separated from dense background content.
Formatting reports and protocols
Balancing hierarchy and density
Create a clear scale for headings, subheadings, and body text. Use white space, bullet lists, and short paragraphs so dense scientific protocols stay skimmable during daily lab use.
Print versus digital output
Design print versions at slightly larger sizes than onscreen defaults to offset paper glare and reading distance. Export slides and posters with headings that remain visible from the back of the room.
Best practices and next steps
- Set a consistent base size for body text across all NIH documents
- Use larger, bold headings to create a clear visual hierarchy
- Test key documents on screen and in print with real users
- Prefer responsive relative units for web-based NIH content
- Verify accessibility through contrast checks and simple usability tests
FAQ
Reader questions
What size should I use for the main text in an NIH grant application?
Use 11–12 pt for body text in most NIH grant applications, and follow any specific funder instructions about maximum page count or font restrictions.
How do I choose heading sizes for a digital dashboard?
Set dashboard headings between 18–22 pt and ensure strong contrast. Pair larger headings with generous spacing so users can quickly scan metrics without confusion.
Can I use a non-standard font if it improves clarity?
Yes, if the font is highly legible and permitted by funder or institutional policies, but test it in long documents to confirm readability and licensing compliance.
Should I adjust font size when presenting posters at conferences?
Increase text and headings on posters so viewers can read from a few feet away. Use larger headings, wider margins, and simpler layouts for high-traffic conference spaces.