Aspect Ratio Calculator
Calculate display aspect ratios and check scaling options for resolution dimensions.
Calculates aspect ratios. Reduces dimensions to their simplest integer quotients using GCD algorithms.
How to Use the Aspect Ratio Calculator
Find the aspect ratio of any image or video layout with our free aspect ratio calculator. Input height and width dimensions (in pixels, inches, or centimeters) to compute the simplified aspect ratio (such as 16:9 or 4:3) and find scaled dimensions for different layout sizes.
- Width (pixels): Bounded parameter in the mathematical model.
- Height (pixels): Bounded parameter in the mathematical model.
Aspect Ratio Calculator Explained: Formula, Math, and Applications
Learn the mathematics, formulas, and real-world applications behind the Aspect Ratio Calculator.
Read Full Guide →What is the formula to calculate aspect ratio?
To calculate the aspect ratio, find the Greatest Common Divisor (GCD) of the width and height, then divide both numbers by the GCD: Aspect Ratio = (Width / GCD) : (Height / GCD).
What is the difference between 16:9 and 4:3 aspect ratios?
16:9 is the modern standard widescreen format used for most monitors, TVs, and YouTube videos. 4:3 is the older square-like format used by classic television sets, older computer monitors, and iPads.
How do you scale an image while preserving its aspect ratio?
To scale an image, multiply both the width and height by the same scaling factor. Alternatively, you can calculate a new width by dividing the new height by the original height and multiplying by the original width.
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