Ratio calculator

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* Enter ratio or screen resolution.

Finds the missing value in a set of ratios

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* Provide any three values to calculate the ratio A:B = C:?. E.g 16:9, 3:?.

What is Ratio?

A ratio is a quantitative relationship or comparison between two or more quantities. It expresses how many times one value contains or is contained within another value. Ratios are often used to describe proportions, relationships, or comparisons between different elements or parts of a whole.

In a ratio, you typically have two numbers separated by a colon (e.g., 2:1) or expressed as a fraction (e.g., 1/2). These numbers can represent various things, such as lengths, quantities, amounts, or any other measurable values.

For example, if you have a bag containing 20 red marbles and 10 blue marbles, the ratio of red marbles to blue marbles is 20:10 or 2:1, which means there are two times as many red marbles as there are blue marbles.

Ratios are used in various fields, including mathematics, science, finance, and everyday life, to describe relationships, make comparisons, and solve problems involving proportions and relative quantities.

What is Aspect Ratio?

Aspect ratio is a mathematical ratio that describes the relationship between the width and height of an image or screen. It represents the proportion between the width and height in the form of a fraction or decimal number. Aspect ratio is an important concept in images, videos, and graphic design because it influences how we display and view content on a screen.

For example, in a screen with a 16:9 aspect ratio, it means that the width of the screen is 16 units, and the height is 9 units. This can be expressed using a fraction (16/9) or a decimal number (1.77) to describe this ratio.

Different aspect ratios are suitable for different applications and purposes. For instance, the 4:3 aspect ratio is commonly used in classic televisions and computer monitors, while the 16:9 aspect ratio is often used in HD and Full HD screens. Aspect ratio also determines how we experience various forms of media, such as watching movies in theaters or on TV.

Popular aspect ratios and sizes of videos and Screens

NameAspect ratioWidth (pixel)Height (pixel)
480p3:2720480
576p5:4720576
720p16:91280720
1080p16:919201080
2160p (4K UHD)16:938402160
4320p (8K UHD)16:976804320
8640p16:9153608640
SVGA4:3800600
WSVGA~17:101024600
XGA4:31024768
XGA+4:31152864
WXGA16:91280720
WXGA5:31280768
WXGA16:101280800
SXGA (UVGA)4:31280960
SXGA5:412801024
HD~16:91360768
HD~16:91366768
SXGA+4:314001050
WXGA+16:101440900
HD+16:91600900
UXGA4:316001200
WSXGA+16:1016801050
FHD16:919201080
WUXGA16:1019201200
QWXGA16:920481152
WQHD16:925601440
WQXGA16:1025601600

See also
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