
A ratio of 8 to 4 can be written as 8 to 4, 8:4, or 8/4. Furthermore, 8 and 4 can be the quantity or measurement of anything, such as students, fruit, weights, heights, speed and so on.
A ratio of 8 to 4 simply means that for every 8 of something, there are 4 of something else, with a total of 12.
In the box below, you can enter a number in either box and we will calculate the other number to keep the ratio of 8 to 4. In other words, we will calculate the corresponding equivalent ratio of 8:4 for you.
To calculate the left side of the ratio, our calculator multiplies the right side by 8 and then divides the product by 4. To calculate the right side of the ratio, our calculator multiplies the left side by 4 and then divides the product by 8. Answers are rounded to two decimals if necessary.
Below is a list of equivalent ratios of 8:4 that we created using our 8:4 ratio calculator above.
2:1
4:2
6:3
8:4
10:5
12:6
14:7
16:8
18:9
20:10
22:11
24:12
We have also created a pie chart for you to put 8:4 ratio in perspective. To do so, we divided a pie into 12 pieces and then colored 8 pieces green and 4 pieces blue. The pie will look exactly the same using any equivalent ratio of 8:4.

The green part of the pie covers 66.67% and the blue part covers 33.33%. To calculate the percentages, we divided each side of the ratio by its total and then multiplied by 100, like this:
(8 / 12)×100 ≈ 66.67
(4 / 12)×100 ≈ 33.33
In fractional terms, 8/4 of the pie above is colored in green. This means that the ratio of 8 to 4 or 8:4 can also be expressed as a fraction, where the 8 to the left of the colon is the numerator and the 4 to the right of the colon is the denominator:
8:4 = 8/4
Ratio is often used when defining rectangles in width:height format. Width and height can be feet, inches, centimeters, or any other kind of length. With a ratio of 8 to 4, the width is 8 and the height is 4. Below is a picture of what a rectangle with a ratio of 8:4 looks like.

Since the simplest form of the fraction 8/4 is 2/1, the simplest form of the ratio 8:4 is also 2:1.
Ratio Calculator
Need information about another ratio? Here you can submit another ratio for us to explain.
Ratio of 8 to 5
Go to the next ratio on our list that we have detailed information about.
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