Portrait Aspect Ratio Calculator

What Is Portrait Aspect Ratio?

Portrait aspect ratio describes the width-to-height relationship of a vertical image or video. Common portrait ratios include 9:16 for vertical video, 4:5 for Instagram, and 2:3 for classic photo prints.

Portrait Dimension Formula

$$\text{width} = \text{height} \times \frac{W}{H}$$

For a 3:2 portrait ratio with a known height of 500 px: width = $500 \times 3/2 = 750$ px. To find height from width, multiply by $H/W$ instead.

Frequently Asked Questions

What is the best portrait ratio for Instagram?

Instagram feed portraits commonly use 4:5 (1080 × 1350 px). Stories and Reels use 9:16.

Is 4:5 good for portrait photography?

Yes. The 4:5 ratio is widely used for vertical prints and social media portraits.

How do I calculate width from height?

Multiply the height by the ratio width divided by ratio height. For 2:3 with 600 px height: 600 × 2/3 = 400 px width.

What is 9:16 used for?

9:16 is the standard vertical video format for TikTok, YouTube Shorts, Instagram Reels, and mobile fullscreen content.

Does portrait mean height is always larger?

In portrait orientation the image is taller than it is wide. The ratio numbers describe width:height, so 9:16 means width 9 and height 16.

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Portrait Aspect Ratio Calculator

What Is Portrait Aspect Ratio?

Portrait Dimension Formula

Frequently Asked Questions

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