Screen Resolution & Aspect Ratio Calculator

Analyze display resolutions, calculate lowest-term aspect ratios via GCD, and scale dimensions.

16:9
3,686,400 pixels (3.69 MP)

How It Works

  • Computes Greatest Common Divisor (GCD) using Euclidean algorithm to simplify ratios.
Formula & Technical Standard
Aspect Ratio = (Width / GCD) : (Height / GCD)

Practical Example

2560x1440
Input: 2560x1440
Output: 16:9 aspect ratio
GCD is 160.

Frequently Asked Questions

Why is 21:9 actually 43:18?

3440x1440 simplifies to 43:18. "21:9" is a consumer marketing approximation.

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