How to choose PPT fonts: commonly used fonts and font size standards

Key points of this article

Text size is usually no smaller than 18pt, projection or conference space needs to be larger, footnotes can be as low as 12pt, but should not be smaller.
The title, text, and footnotes should be hierarchical, and the font sizes should be significantly different. This makes it easier for readers to distinguish priority from boldness alone.
It is recommended to use only 1 to 2 fonts for the same slide. Chinese and English can be paired separately to avoid style confusion.
Bilingual or translated text usually becomes longer. After changing languages, you need to check page by page to see if it overflows the text box or is squeezed together.

When many people make PPT, they choose fonts based on their feelings: use a good-looking font for the title, and set the default font size for the text. After writing, they find that people in the back row can’t see it clearly, or there are four or five fonts crammed into one page, making it look messy. This type of question is common in student reports, work debriefings, and project reviews.

This article is written for people who need to make presentations but do not have a professional design background. It does not talk about how to select fonts in the software, but answers two more basic questions: what fonts to use for titles, text and footnotes, and what is the appropriate font size. After reading, you should be able to set a range for each type of text, and know under what circumstances you need to adjust it to a larger or smaller size.

The numbers below are common typesetting reference ranges and are not mandatory standards. The real judgment comes down to room size, screen size and page content, which are explained in the FAQ at the end of this article.

What is the appropriate font size? One sentence conclusion

For most projection presentations, use 36 to 44pt for titles, no less than 18pt for body text, no less than 12pt for footnotes, font selections should be sans-serif, and no more than two fonts on the same page. The font size should be based on what the audience in the back row can see clearly, not how it looks like it "doesn't take up much space" on the screen.

your situation	Recommended practices	reason
Conference room projection, the audience sits farther away	The main text should be 20 to 24pt, the title should be about 40pt, and the footnote should be no less than 14pt.	The further the distance, the more the font size needs to be enlarged so that it can be read clearly in the back row.
View it alone on a laptop or monitor, or share it with others to view	Text 18 to 20pt, title 32 to 36pt, footnote 12 to 14pt	If the screen is close, the font size can be slightly smaller, but still ensure comfortable line spacing.
One page should contain a large amount of data, tables or legends	Tables and figures 14 to 16 pt, try to split into multiple pages, don’t cram them	The font size is too small to read clearly. Splitting pages is more effective than abbreviating characters.
Mainly Chinese, with a small amount of English	For Chinese, use Siyuan Hei typeface, Yahei typeface or isoline. For English, use Arial or Calibri. Two fonts are enough for the entire page.	When Chinese and English are mixed, the fonts are unified and the vision is more tidy.
Bilingual or translated documents	First set the original text size, then check page by page, and reduce the translation size by one notch if necessary.	The translation is usually longer and can easily break the text box or suppress the image.

📊 Core comparison

Suggested font sizes and fonts for different text characters are as follows. These are starting points and can be fine-tuned depending on the theme and venue.

Text characters	Common font size	Font suggestions	Notes
Page headline	36 to 44pt	Heiti or equal lines, font weight tends to be bold	The title only appears once per page; don't use multiple large fonts to compete for attention
Subtitle or section heading	24 to 32pt	Fonts belonging to the main heading	The gap with the main text should be obvious; otherwise, the hierarchy is unclear
Main Points	18 to 24pt	sans-serif fonts, such as Siyuan Hei and YaHei fonts	It is recommended to limit each page to no more than 5 key points, each within one or two lines
Quote or emphatic sentence	20 to 28pt	You can use regular script or Song font to contrast with the main text	If you only use one or two sentences, quoting long passages can actually make them hard to read
Chart labels and annotations	14 to 18pt	Maintain the same font family as the main text	The numbers and axis text should be slightly smaller than the main text but not less than 14pt
Footnotes, sources, copyright information	12 to 14pt	Sans-serif font, slightly lighter colors	If the color is too light, it will affect recognition, so make sure there is enough contrast with the background

How to Choose Fonts: Distinguish Styles First, Then Control the Quantity

Fonts fall into two main categories, and most demo scenarios only need to understand the differences between these two types.

Sans-serif fonts: A common choice for projection and screen

Sans-serif fonts refer to fonts without decorative feet at the end of strokes, such as Heiti, Siyuan Hei, Yahei typefaces, and isolines in Chinese, and Arial, Helvetica, Calibri in English. They have uniform stroke thickness and stable clarity on projection and screen, making them suitable as default fonts for titles and body text. This category is mostly used for academic presentations, business reports, and technical sharing.

Serif fonts: Suitable for situations with a lot of text or those with more traditional text

Serif fonts have decorative stroke endings, such as Chinese Song typeface, English Times New Roman, Georgia. It has good coherence in paper reading, making it suitable for large text-based handouts or printed editions. When used for slides, if it's a projection, fine strokes tend to blur from a distance, so it's recommended to use sans serif in the main text, and serif lines are only used for titles or citations.

Common Misconception: The more fonts and the more varied the font size, the more professional it looks

Many people think using multiple fonts will give a sense of design, but the actual effect is often the opposite. When three or four fonts appear on a page, readers will first notice differences in character shape, not the content. A safer approach is:

The same demonstration uses only one main font; one corresponding font each for Chinese and English is sufficient.
Use font size and re-weighting to create layers, such as bold titles, regular body text, lighter footnotes, rather than changing fonts.
Color types should also be controlled; body text usually uses dark gray or black, and accent colors are only used for keywords.

Why font size can't be based solely on numbers

The font sizes given above are common ranges, but they depend on two premises: first, the size of the venue and screen, and second, the amount of information per page.

The larger the room and the farther the audience, the higher the brand name should rise. If the meeting room is large, 18pt in the main text might not be enough; it's safer to set it directly at 22pt or above. Conversely, if you're browsing on a small screen, the main text at 18pt is already very clear, but zooming in makes the layout look loose.

The amount of information also affects judgment. If there is only one conclusion per page, the title can be enlarged to about 44pt; leaving a bit more blank space is fine; If a page contains more than a dozen key points, you should first trim or split the pages, rather than reducing the font size below 14pt. The lower limit of font size ensures readability, not a tool for storing too much content.

How to Use It: Use OmniDoc to Process Existing PPT Files

If you already have a PPT and need to translate it into another language or make a bilingual version, you can follow the steps below and check the font size and layout during the process.

Upload .pptx file to omnidoc.top and choose either bilingual or translated text. OmniDoc supports PowerPoint format, and the layout, images, and tables are preserved during translation.
Download the translated file and open it using PowerPoint or other desktop office software that can open .pptx.
Page by page: Check whether the translation exceeds the text box, overlaps with images or charts, and whether the title has too many line breaks.
When problems are found, first reduce the translation or footnote font size, shrinking one notch each time (for example, 1 to 2 points), rather than shrinking very small at once.
For cases where a unified font size is needed, you can set default font sizes for the title and body in the slide master, then fine-tune the exception page by page.
Translation results require manual verification, especially for technical terms, numbers, and names; machine translation cannot guarantee accuracy in every detail.

If you need more detailed layout adjustments, such as rewriting part of the translation or standardizing terminology, you can use the PDF editing feature of the OmniDoc desktop client to handle the exported PDF version, or export the file as Word and then adjust it. To directly change font size in PPT, the direct method is still to select the text box in the software and set the font and font size.

🎯 Which method suits you?

For classroom or academic presentations: Title 36 to 40pt, body text about 20pt, sans-serif font, chart tags no less than 14pt.
For business reports or project reviews: Title is about 36pt, main text 18 to 22pt, one core conclusion per page, consistent font.
Create a version that needs to be sent to others for their own reading: Main text should be 16 to 18pt long, footnotes should keep at least 12pt, and you can appropriately increase the distance between paragraphs.
Translate or make bilingual versions: First, check the original text size by page by page, narrow down if necessary, and do not finalize the draft after just reading the first page.

❓ Frequently Asked Questions (FAQ)

1. What font is generally used for PPT?

Chinese presentations often use Source Han, YaHei-type fonts, or sans-serif fonts like Monosifolia as headings and body text; English often uses Arial or Calibri. For the same presentation, it's recommended to use only one or two fonts to avoid style confusion.

2. What font size is best for PPT?

Main text usually ranges from 18 to 24pt, headlines 36 to 44pt, and footnotes no less than 12pt. The larger the venue and the farther the audience, the higher the font size should be; the specific size should be reviewed in the actual projection environment before deciding.

3. What are the three recommended fonts for PPT fonts?

There is no official unified list here, but common combinations in actual use are: one Chinese Han (such as Siyuan Hei or YaHei-type fonts), one English sans (such as Arial or Calibri), and one KaiTi or Song font used for references or emphasis. Three fonts are sufficient; too many can easily cause confusion.

4. Should I use serif or sans-serif for the font during projection?

When projecting, it is recommended to use sans-serif fonts with even stroke thickness and clear distant points. Fine strokes in serif fonts tend to appear blurry on large screens, making them more suitable for paper handouts or text-heavy reading versions.

5. Should the translated PPT font size be rearranged?

Inspections are necessary. Translations are usually longer than the original, may exceed the text box, or overlap with images. Read page by page first; if overflow is found, reduce the translation font size by one or two stops first, then check if the layout is neat.

📝 Summary

The choice of PPT font can be summarized into three things: use an appropriate font size range for the title, body, and footnotes; use mainly sans-serif with no more than two fonts per page; and the final font size should be based on whether the audience in the back row can see clearly. Once the scope is set, fine-tune based on the venue, screen, and content volume, saving time compared to relying on intuition and repeated revisions.

Open OmniDoc to translate and edit your presentation