📊Presentation Slide Size Guide

Guide standard slide dimensions and ratios for PPT, Keynote, and Google Slides

RatioPixelscmInchesDefault Software
16:9 Widescreen1920×108033.87×19.0513.33×7.5PowerPoint (default), Keynote, Google Slides
4:3 Standard1024×76825.4×19.0510×7.5PowerPoint (legacy)
16:9 High-Res (4K)3840×216033.87×19.0513.33×7.54K presentations
A4 Landscape (300dpi)3508×248029.7×2111.69×8.27Print-ready A4
A4 Portrait (300dpi)2480×350821×29.78.27×11.69A4 portrait poster
Square (Social)1080×1080--Social media slides
9:16 Portrait1080×192019.05×33.877.5×13.33Mobile Stories

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Presentation Slide Size Guide

See the standard slide dimensions for PowerPoint, Keynote, and Google Slides in pixels, centimeters, and inches. The current default across most software is 16:9 widescreen (1920×1080px / 13.33×7.5 in).

The 4:3 ratio is compatible with older projectors but most modern displays use 16:9. A4 (29.7×21cm) is ideal for printed reports. Use 1080×1080px for social media and 1080×1920px for Stories and Reels.

In Keynote: File → Slide Size → Custom. In Google Slides: File → Page Setup → Custom.

Frequently Asked Questions

What is the default PowerPoint slide size?

Since PowerPoint 2013, the default is Widescreen 16:9 (33.87×19.05cm). Older versions used Standard 4:3 (25.4×19.05cm).

What is the default Google Slides size?

The default is 25.4×14.29cm (16:9). Change it via File → Page Setup.

Does exporting to PDF change the slide size?

No — the slide size is preserved in PDF export. When printing, check paper size and scaling settings.