Aspect Ratio Calculator

How to calculate Aspect ratio calculator?

Use the aspect ratio as a decimal and apply a simple multiply or divide to find the missing dimension.

Key formulas: height = width ÷ aspect_ratio and width = height × aspect_ratio

Using the Aspect ratio calculator calculator: an example

Example values — aspect ratio 1.777 (16:9) and known width 1920 pixels.

Step-by-step calculation:

1. Start with width = 1920 px and aspect_ratio = 1.777.
2. Apply formula: height = 1920 ÷ 1.777.
3. Compute result: 1920 ÷ 1.777 ≈ 1080 pixels.
4. Verify the ratio by dividing 1920 by 1080 ≈ 1.777.

Frequently Asked Questions

Can I enter the aspect ratio as a fraction?

Yes. Convert the fraction to a decimal (for example, 16/9 = 1.777) before using the calculator or use a tool that accepts fraction input.

What if I only know the height?

Use width = height × aspect_ratio to calculate the width from a known height.

Should I round the result?

Yes. Round to the nearest whole pixel for display dimensions; keep decimals if you need greater precision.

Can the calculator handle uncommon ratios?

Yes. Any positive decimal ratio works; avoid zero or negative values.