Aspect Ratio Calculator

Resize images or video dimensions perfectly without losing proportion.

Original Ratio

Quick Presets

Width (W1)

Height (H1)

New Dimensions

Change either value below. The other will automatically calculate to maintain the aspect ratio.

Width (W2)

Height (H2)

Visual Preview

16:9

Formula: (W1 / H1) = (W2 / H2)

About This Tool

Calculate exact dimensions and aspect ratios for video production, web design, and photography. The Aspect Ratio Calculator is designed to be fast, secure, and incredibly easy to use directly from your browser.

How to Use the Aspect Ratio Calculator

Enter your original width and height.
Provide a new width or height to scale.
The tool instantly calculates the missing dimension to maintain the ratio.

Why Use Our Aspect Ratio Calculator?

Prevents Distortion: Ensure your media looks perfect on any screen.
Standard Presets: Quickly select common ratios like 16:9 or 4:3.
Instant Math: No more manual cross-multiplication.