Aspect Ratio Calculator & Image Dimension Scaler

Calculate and scale image and video dimensions with BharatUtility's Aspect Ratio Calculator. Resize YouTube thumbnails, Instagram Reels, and web photos while preserving exact proportions.

Interactive Aspect Ratio Calculator & Image Dimension Scaler
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Formula & Calculation Methodology

New Height = (New Width × Original Height) ÷ Original Width; Ratio simplified via Greatest Common Divisor (GCD).

Step-by-Step Worked Example

Original: 1920 × 1080 (16:9) | Target Width: 1080 px

  1. GCD of 1920 & 1080 = 120 -> Aspect Ratio is 16:9
  2. Target Height = (1080 × 1080) ÷ 1920 = 608 px
Result: Target Dimension: 1080 × 608 px (Maintains exact 16:9 proportion)

Standard Social Media Aspect Ratios

YouTube Landscape Videos & Thumbnails: 16:9 (1920×1080 / 1280×720).

Instagram Reels, YouTube Shorts, TikTok: 9:16 (1080×1920).

Square Posts: 1:1 (1080×1080).

Frequently Asked Questions

How do I find the aspect ratio of my custom image?

Simply enter your image width and height in pixels; the tool will find the greatest common divisor and output the simplified ratio (e.g. 16:9, 4:3).

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