What is an aspect ratio?

An aspect ratio is the proportional relationship between an image or video's width and its height, represented as two numbers separated by a colon (e.g., 16:9, 4:3, 1:1).

What is the standard aspect ratio for YouTube, TikTok, and Instagram?

YouTube landscape videos use 16:9 (1920x1080). TikTok, YouTube Shorts, and Instagram Reels use 9:16 vertical (1080x1920). Instagram feed posts traditionally use 1:1 square (1080x1080) or 4:5 portrait (1080x1350).

How do you calculate missing dimensions while preserving aspect ratio?

To preserve ratio: `New Height = (New Width / Original Width) * Original Height`, or `New Width = (New Height / Original Height) * Original Width`.

Video & Photography Suite • 100% In-Browser Privacy • Common Aspect Presets

Free Aspect Ratio & Resolution Calculator

Scale pixel dimensions while preserving precise proportional aspect ratios (16:9, 9:16, 4:3, 1:1, 21:9). Calculate new width or height without visual distortion.

Popular Presets

1. Original Dimensions

Width (W1)

Height (H1)

Computed Aspect Ratio: 16 : 9

2. New Scaled Dimension

New Width (W2)

New Height (H2)

Scaled Resolution: 1280 × 720 px

Free Aspect Ratio & Resolution Calculator

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