Aspect Ratio Calculator & Resizer
Calculate proportional dimensions for video editing, social media stories, responsive web UI, and photography.
Video & Social Presets:
1. Original Dimensions (W1 × H1)
2. New Proportional Dimensions (W2 × H2)
Calculated Ratio: 16:9 (1.78:1)
Live Visual Proportion Preview
16 : 9
How to Calculate Aspect Ratio Mathematically
An aspect ratio represents the proportional relationship between width and height. To scale dimensions without distortion: New Height = (Original Height / Original Width) × New Width, or New Width = (Original Width / Original Height) × New Height. This prevents stretching and letterboxing.
Frequently asked questions
What does Aspect Ratio Calculator do?
Calculate dimensions, simplify ratios, and resize images or video formats (16:9, 9:16, 4:3, 1:1, 21:9). Includes social media presets and CSS aspect-ratio code.
How do I use Aspect Ratio Calculator?
Open Aspect Ratio Calculator, enter or select the input requested by the tool, and use its controls to see the result.
Where can I find tools related to Aspect Ratio Calculator?
Use the related tools below to explore more Calculators & Math tools.