The best fonts for presentations are clean sans-serifs that stay readable from the back of a room: Inter, Helvetica or Arial, Roboto, Lato, and Montserrat for headings. For a more editorial feel, pair them with a classic serif like Georgia or Garamond. Pick one heading font and one body font, then use those two everywhere.

I have spent more time than I want to admit nudging type on slides. Bumping a heading from 40 to 44 point, deciding whether the body should be Calibri or something with a bit more spine, then doing it all again on the next deck because nothing carried over. The fonts themselves are an easy problem. Making the same call a hundred times is the hard one. So this post covers both: which fonts actually hold up on a slide, and how to stop choosing them one deck at a time.

#What are the best fonts for presentations?

The safest answer is a small set of fonts that almost everyone already has installed and that read cleanly when projected: Inter, Helvetica or Arial, Roboto, Lato, Montserrat, and Open Sans on the sans-serif side, with Georgia and Garamond when you want a serif. None of these are exciting, and that is the point. A presentation font is supposed to disappear so the words land.

Here are the ones I reach for, what each is good at, and a partner that works with it.

If you only remember one row, make it Inter or Helvetica for the body and Montserrat for the headings. That combination has saved more of my decks than any clever choice ever did.

#Should slide fonts be serif or sans-serif?

For most slides, sans-serif. The fine strokes that make a serif font look refined on paper get muddy when they are blown up on a projector or compressed by a video call, so a clean sans like Inter or Helvetica stays sharper at a distance. That is why the default fonts in PowerPoint, Google Slides, and Keynote are all sans-serif.

Serifs still earn their place, just in smaller doses. A Garamond or Georgia title on a section divider, a serif pull quote from a customer, a cover slide that wants to feel less like a software UI and more like a magazine. The trick is to use the serif as a deliberate accent rather than the workhorse. Set your body in a sans, then let a serif show up where you want the eye to slow down.

What I would avoid is mixing two serifs, or picking a serif because it looks "premium" and then squinting at it from row ten. Readability beats taste here, and on a slide the two are usually the same thing anyway.

#What font size should you use in a presentation?

Start with 24 point as the floor for body text and do not go below it. If a slide needs smaller type to fit, the slide has too much on it, and shrinking the font is treating the symptom. Headings usually want 36 to 44 point or larger, and a big cover title can run well past that.

A rough scale that has held up for me across hundreds of slides:

• Slide titles: 36 to 44 point, sometimes larger on a cover.
• Section headers and subheads: 28 to 32 point.
• Body text and bullets: 24 to 28 point.
• Captions, sources, and footnotes: 18 to 20 point, and used sparingly.

The real test is not the number, it is the back of the room. If the person furthest from the screen has to lean in, the type is too small, full stop. When I am not sure, I stand up, walk to the far wall, and look. Sizing type is one of those small presentation choices that decides whether anyone actually reads the slide; for the rest of them, our roundup of presentation ideas covers structure, visuals, and delivery.

#What are the best font pairings for slides?

A good pairing gives you contrast without a clash, which usually means one font for headings and one for body that differ enough to tell apart but share a similar mood. The reliable move is to pair a sans-serif heading with a sans-serif body from a different family, or a serif heading with a sans-serif body.

Four pairings I keep coming back to:

1. Montserrat headings, Lato body. Geometric and confident up top, warm and readable below. Hard to get wrong.
2. Georgia headings, Arial body. A serif title with a neutral sans underneath reads editorial without trying too hard.
3. Inter for everything. One family, with bold or semibold for headings and regular for body. Modern, and impossible to mismatch.
4. Garamond titles, Helvetica body. When you want a deck to feel a little more like a book and a little less like a dashboard.

The mistake is reaching for a third or fourth font to make a slide "interesting." Interest comes from size, weight, and spacing inside two families, not from adding more typefaces.

#Should you use a default PowerPoint font or a custom one?

Use a default font unless you have a real reason not to, because the default is the safe one. Calibri, Arial, and now Aptos ship with the software, which means they render the same on the laptop you built the deck on and the conference room machine you present from. A custom font you downloaded does not make that promise.

The failure mode is specific and common. You install a custom font, design a beautiful deck, email the file, and on someone else's computer it falls back to whatever they have, your spacing breaks, and your careful layout becomes a wall of reflowed text. Embedding the font in the file helps in PowerPoint, but it is fiddly, it does not always survive a round trip through Google Slides or a PDF, and licensing for embedding is its own rabbit hole.

If you do want a branded custom font, the answer is not to manage it slide by slide. It is to set it once at the brand level and let every export carry it. Which is the actual problem worth solving, so let's get to it.

#How many fonts should one presentation use?

Two. One for headings and one for body covers almost everything, and a single weight change inside a family can stand in for a second font when you need it. Three is the absolute ceiling, and the third should have a clear job, like a monospace for code or a serif reserved for quotes.

More than that and the deck starts to look like a ransom note. The reason design systems and brand guidelines exist is to take this decision off the table: the fonts are chosen once, written down, and applied everywhere so nobody relitigates them on slide 14 at 11pm. The hard part was never knowing that two fonts beat five. It is getting two fonts to actually show up, identically, on every slide and every export, every time.

#Why you should never pick presentation fonts by hand

Because picking the font is the easy 10 percent, and applying it consistently is the other 90 that quietly eats your evening. You decide on Inter and Montserrat in five minutes. Then you set them on the title, the body, the chart labels, the footer, the next slide, the PDF, the PowerPoint you send to a colleague who opens it and watches half of it fall back to Calibri. The decision is small. The enforcement is the whole job.

This is the part heydecks handles. heydecks is the AI slide creator that AI agents call over REST or MCP. From a prompt, markdown, or a URL it returns a live deck link, a PDF, and a native, editable PowerPoint, every export locked to your brand by the Brand Kernel, which holds your colors, fonts, logo, and layout tokens. You set the type once at the brand level, and it stays put across every deck and every export, so you never pick fonts slide by slide again. heydecks does not decide your taste for you; you bring the brand, it keeps the brand.

Here is a webinar deck heydecks built, rendered on a sample brand so you can see the type working in a real layout instead of a specimen sheet.