Paper Ratio Calculator

Please enter your width and height to calculate aspect ratio

Paper Calculators is the world's best paper calculator resource. The real beauty of the golden ratio approach reveals itself if you look at the resulting ratios. The ratio of the paper area to the picture area is φ, as expected. But additionally, the ratio of the picture area to the border area is φ. And if you have chosen to increase the lower border, the ratio of the lower border to the other borders is also φ. The ratio calculator performs three types of operations and shows the steps to solve: Simplify ratios or create an equivalent ratio when one side of the ratio is empty. Solve ratios for the one missing value when comparing ratios or proportions. Compare ratios and evaluate as true or false to answer whether ratios or fractions are equivalent.

About Aspect Ratio

The aspect ratio of an image defines the proportion between its width and height. It is always expressed as two numbers separated by a colon (x:y). For example, images with the aspect ratio of 16:9, no matter how big or small, will always have the width of 16 and the height of 9 units of the same length. Therefore, 16 centimeters wide and 9 centimeters high image as well as 32 centimeters wide and 18 centimeters high image has the same 16:9 aspect ratio.

How to Use Our Calculator

In order to find out the aspect ratio of an image or video, both width and height should be known in advance. If you already have these two measurements just insert them into the calculator above and aspect ratio will be calculated as a result. All calculations are being made automatically to assure efficiency, accuracy, and fluidity!

Portrait vs. Landscape

Additionally our aspect ratio calculator will provide the mode for you picture or video. It will be determined based on the measurements provided. Mode for the images or videos which are taller than it is wide will be 'Portrait' and those with the bigger width than height will be 'Landscape'.

Other Important Details

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Please note that measurements should always include ONLY the size of the actual image or video, and NOT to include additional video player dimensions or picture frames / borders. Sometimes video players or image frames could add up to 20 – 30 pixels and as a result aspect ratio will not be as it truly is.
You may also find useful other aspect ratio calculators:

Please provide any three values below to calculate the fourth in the ratio A:B = C:D.

Paper Ratio Calculator

Ratio Scaling Calculator

Related:Fraction Calculator

What is Ratio?

A ratio is a quantitative relationship between two numbers that describes how many times one value can contain another. Applications of ratios are fairly ubiquitous, and the concept of ratios is quite intuitive. This could likely be demonstrated by giving a child half as many cookies as his sister. While the child may not be able to voice the injustice using ratios, the raucous protestations that would most likely ensue should make it immediately obvious that he is well aware he has received 1:2 as many cookies as his sister, conceptually, if not mathematically.

As shown above, ratios are often expressed as two numbers separated by a colon. They can also be written as '1 to 2' or as a fraction ½. The ratio represents the number that needs to be multiplied by the denominator in order to yield the numerator. In this case, ½. This is clearer if the first number is larger than the second, i.e. with the ratio 2:1, 2 can contain 1, 2 times. It is also possible to have ratios that have more than two terms.

Paper ratio calculator

Ratios are common in many daily applications including: aspect ratios for screens, describing maps and models as a scaled down version of their actual size, in baking and cooking, when discussing the odds of something occurring, or to describe rates, such as in finance. If, for example, a person wanted to make 5 cakes, each of which required a 1:2:3 ratio of butter:sugar:flour, and wanted to determine the total amount of butter, sugar, and flour that is necessary, it would be simple to compute given the ratio. Increasing the ratio by five times yields a 5:10:15 ratio, and this can be multiplied by whatever the actual amount of sugar, flour, and butter are used in the actual cake recipe.

Paper Weight Calculator

Typical Aspect Ratios and Sizes of Screens and Videos

The aspect ratio is the ratio of a geometric shape's sizes in different dimensions. In the case of a rectangle, the aspect ratio is that of its width to its height. Although aspect ratios are widely used in applications such as tire sizing, paper sizing, and standard photographic print sizes, some of the most frequent uses of aspect ratios involve computer screen dimensions, mobile phone screens, and video sizes. As such, below is a list of typical computer screen/video resolutions and aspect ratios.

Paper Calculator Math

NameAspect ratioWidth (pixel)Height (pixel)
2160p (4K UHD)16:938402160
4320p (8K UHD)16:976804320
SXGA (UVGA)4:31280960