Find the aspect ratio of any dimensions and scale width or height without distortion.
16:9
New height
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An aspect ratio is the proportional relationship between width and height, expressed as two numbers separated by a colon (like 16:9 or 4:3). It is essential for video, photography, and screen design - maintaining the correct ratio ensures images do not appear stretched or squashed. Enter your dimensions to instantly find the aspect ratio and scale to new sizes while preserving the original proportions.
A 1920×1080 image has an aspect ratio of 16:9, the standard for widescreen displays and HD video.
To resize a 1920×1080 image to 1280 pixels wide while maintaining its 16:9 ratio, the new height is 720 pixels.
What is an aspect ratio?
An aspect ratio is the relationship between width and height as a simplified fraction. For example, 16:9 means for every 16 units of width, there are 9 units of height. Common ratios include 1:1 (square), 4:3 (classic TV), 16:9 (widescreen), and 21:9 (ultrawide).
What is 16:9 in pixels?
16:9 describes a proportion, not a specific pixel size. 1280×720, 1920×1080, 3840×2160 are all 16:9 because the width-to-height ratio is the same. Use this calculator to convert between aspect ratios and actual pixel dimensions.
How do I resize an image without distortion?
Maintain the aspect ratio by scaling proportionally. If you change the width, divide the new width by the original width, then multiply the original height by that factor. This calculator does it for you - just enter the original dimensions and new width.