# Ratio Calculator

Easily calculate ratios between two or more values. Simplify complex comparisons and find proportional relationships accurately and quickly. Please provide any three values below to calculate the fourth in the ratio A:B = C:D.

 A B C D : = :

## Ratio Scaling Calculator

Calculate ratios and scale values proportionally. Simplify comparisons, conversions, and adjustments with precise ratio scaling calculations.

 : Enlarge Shrink times =

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### What is Ratio?

A ratio is a quantitative relationship between two numbers that describe 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.

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.

### 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.

 Name Aspect ratio Width (pixel) Height (pixel) 480p 3:2 720 480 576p 5:4 720 576 720p 16:9 1280 720 1080p 16:9 1920 1080 2160p (4K UHD) 16:9 3840 2160 4320p (8K UHD) 16:9 7680 4320 8640p 16:9 15360 8640 SVGA 4:3 800 600 WSVGA ~17:10 1024 600 XGA 4:3 1024 768 XGA+ 4:3 1152 864 WXGA 16:9 1280 720 WXGA 5:3 1280 768 WXGA 16:10 1280 800 SXGA (UVGA) 4:3 1280 960 SXGA 5:4 1280 1024 HD ~16:9 1360 768 HD ~16:9 1366 768 SXGA+ 4:3 1400 1050 WXGA+ 16:10 1440 900 HD+ 16:9 1600 900 UXGA 4:3 1600 1200 WSXGA+ 16:10 1680 1050 FHD 16:9 1920 1080 WUXGA 16:10 1920 1200 QWXGA 16:9 2048 1152 WQHD 16:9 2560 1440 WQXGA 16:10 2560 1600

### Ratio Calculator Example

Suppose we have a dataset of sales data for three different products in a store. The table below shows the number of units sold for each product over the course of three months.

Month Product A Product B Product C
January 120 90 60
February 180 110 75
March 150 95 80

Now, let's calculate the ratio between the sales of Product A and Product B for each month using a Ratio Calculator.

Using the Ratio Calculator, follow these steps:

1. Identify the values you want to compare:

• Numerator: Sales of Product A
• Denominator: Sales of Product B
2. Enter the values into the Ratio Calculator for each month:

• January: Ratio = 120 / 90 = 1.33 (rounded to two decimal places)
• February: Ratio = 180 / 110 ≈ 1.64
• March: Ratio = 150 / 95 ≈ 1.58

The Ratio Calculator will provide you with the ratios for each month:

• January: Ratio ≈ 1.33
• February: Ratio ≈ 1.64
• March: Ratio ≈ 1.58

These ratios represent the ratio of sales between Product A and Product B for each respective month. They provide insight into the relative performance or popularity of the products during that period.

Using a Ratio Calculator simplifies the process of calculating ratios, making it easier to compare different values and identify patterns or trends.