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Aspect ratio calculator
Enter pixel dimensions to reduce them to their simplest width-to-height ratio. Nothing is uploaded.
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Simplified ratio16:9
1920 × 1080 is landscape. 2.07 megapixels.
Equivalent widths: 1280 × 720 and 1920 × 1080 (same shape, different pixel counts).
What the ratio tells you
Aspect ratio describes shape rather than image quality. Two files can share a 16:9 ratio while having very different resolutions. Use the ratio when planning crops or layouts; use pixel dimensions when you need to know actual resolution.