# Slide Size Guide

Free tool, no account required: https://slideso.com/tools/slide-size-guide

## What size is a PowerPoint slide?

The default PowerPoint and Google Slides size is 16:9 widescreen, which is 13.333 by 7.5 inches, or 33.87 by 19.05 centimetres. The older 4:3 standard is 10 by 7.5 inches. Exported at 1080p, a 16:9 slide is 1920 by 1080 pixels; social carousels use 1080 by 1350 for portrait and 1080 by 1080 for square.

### Key takeaways

- 16:9 widescreen is the PowerPoint and Google Slides default at 13.333 by 7.5 inches.
- 4:3 standard is 10 by 7.5 inches and now appears mainly in older decks and some conference templates.
- 1920 by 1080 pixels covers most screens and projectors; 3840 by 2160 is only needed for 4K display or large print.
- Changing aspect ratio after a deck is built re-flows every slide, so hand-positioned elements have to be checked again.

## Reference figures

| Measure | Value | Notes |
| --- | --- | --- |
| 16:9 widescreen | 13.333 × 7.5 in | PowerPoint and Google Slides default |
| 4:3 standard | 10 × 7.5 in | Older decks, some conference templates |
| 16:9 at 1080p | 1920 × 1080 px | Covers most screens and projectors |
| Portrait carousel | 1080 × 1350 px | LinkedIn and Instagram |
| Square carousel | 1080 × 1080 px | Instagram and paid social |

## How to use the Slide Size Guide

1. **Pick your target** — Choose 16:9 for anything shown on a screen or projector, 4:3 only if a template or venue requires it, and 4:5 or 1:1 for social carousels.
2. **Choose an export resolution** — Select 1080p, 1440p or 4K. The table converts each aspect ratio into pixels, inches and centimetres at that resolution.
3. **Set the size before you build** — Change slide size at the start. Changing it later re-flows every slide, and elements positioned by hand keep their coordinates while the canvas changes shape — which is when text starts colliding with images.

Pick the size before you build, not after. Changing aspect ratio partway through re-flows every slide, and anything positioned by hand moves with it — which is exactly when text starts colliding with images.

## Frequently asked questions

**What size is a Google Slides presentation?**
16:9 widescreen by default, the same ratio as PowerPoint but expressed as 10 by 5.63 inches rather than 13.333 by 7.5. Because the ratio matches, a deck moves between the two without re-flowing.

**What is the pixel size of a PowerPoint slide?**
PowerPoint stores slides in inches rather than pixels, so the pixel size depends on export resolution. At 1080p a 16:9 slide is 1920 by 1080; at 4K it is 3840 by 2160.

**What resolution should I export at?**
1920 by 1080 covers most screens and projectors. Export at 3840 by 2160 only if the deck will be shown on a 4K display or printed large.

**Can I change slide size after building a deck?**
You can, but everything re-flows. Elements positioned by hand keep their coordinates while the canvas changes shape, so expect to fix overlaps afterwards. Set the size first where possible.

**Should I use 16:9 or 4:3?**
16:9 unless something forces otherwise. It matches modern screens, projectors and video calls. 4:3 is worth keeping only when a venue's equipment or a required template still uses it.

**What size should a LinkedIn carousel be?**
1080 by 1350 pixels, a 4:5 portrait ratio. It occupies more vertical space in the feed than a square or landscape post.

## Sources

- [Microsoft — Change the size of your slides](https://support.microsoft.com/en-us/office/change-the-size-of-your-slides-040a811c-be43-40b9-8d04-0de5ed79987e)

## Related free tools

- [Presentation Contrast Checker](https://slideso.com/tools/contrast-checker) — Check every colour pairing a slide actually uses — including the ones on cards, where palettes usually fail.
- [Slide Count Calculator](https://slideso.com/tools/slide-count-calculator) — Work out how many slides a talk of any length needs — and how many words each one can carry.

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Source page: https://slideso.com/tools/slide-size-guide
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