What aspect ratio is 1920×1080?

1920×1080 is 16:9 — the standard widescreen ratio. GCD(1920, 1080) = 120, so 1920/120 : 1080/120 = 16:9.

What does 4:3 vs 16:9 mean?

4:3 is the classic TV/monitor ratio (nearly square). 16:9 is modern widescreen (nearly twice as wide as tall). Cinema often uses 21:9 (2.35:1) for an ultra-wide cinematic look.

Aspect Ratio Calculator

Quick answer: Enter width and height to get the aspect ratio, decimal ratio, and scaled dimensions.

Calculate the aspect ratio of any image, video, or screen from its width and height. Also scale dimensions while maintaining the original aspect ratio.

Last reviewed: April 2026Report an error

Width

Height

Target Width

Target Height (optional)

Aspect Ratio

16:9

Aspect ratio: 16:9 (1.7778).

Ratio

16:9

Decimal

1.7778

Scaled Height

720

How to Use This Aspect Ratio Calculator

1Enter the width and height.
2Optionally enter a target width or height to scale while preserving ratio.
3Read the ratio (e.g., 16:9), decimal form, and scaled dimensions.

Frequently Asked Questions

: 1920×1080 is 16:9 — the standard widescreen ratio. GCD(1920, 1080) = 120, so 1920/120 : 1080/120 = 16:9.
: 4:3 is the classic TV/monitor ratio (nearly square). 16:9 is modern widescreen (nearly twice as wide as tall). Cinema often uses 21:9 (2.35:1) for an ultra-wide cinematic look.

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Aspect Ratio Calculator

How to Use This Aspect Ratio Calculator

Frequently Asked Questions

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