Aspect Ratio Calculator

I want to calculate...:

Pixels Width: pixels

Pixels Height: pixels

Select Aspect Ratio:

Aspect Ratio Calculator computes the aspect ratio from pixel dimensions or determines screen dimensions based on a given aspect ratio.

It is widely used in design, photography, and screen resolution analysis to maintain proportional relationships.

Select the calculation mode and input the required values. The process is:

For Aspect Ratio: Enter pixel width and height, and the calculator simplifies them to the lowest integer ratio (e.g., 15:12 → 5:4).
For Screen Dimensions: Select an aspect ratio, enter one dimension (width or height), and click 'Calculate' to determine the other.

Use the form above to input values and calculate.

Example 1 (Aspect Ratio): Width = 15 pixels, Height = 12 pixels.

Calculation: GCD = 3, Aspect Ratio = 5:4

Example 2 (Screen Dimensions): Aspect Ratio = 17:10, Height = 2 pixels.

Calculation: Width = (2 / 10) * 17 = 3.4 pixels

Enter one dimension and click 'Calculate' to verify.

1. What is an aspect ratio?

The aspect ratio is the proportional relationship between width and height, expressed as a ratio (e.g., 16:9).

2. How is the aspect ratio calculated?

It’s derived by dividing width and height by their greatest common divisor (GCD).

3. How do I calculate screen dimensions?

Enter one dimension (width or height) and an aspect ratio, then click 'Calculate' to get the other dimension.

4. Why only one dimension?

Entering one dimension allows the calculator to determine the proportional other based on the aspect ratio.