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

The green part of the pie covers 50% and the blue part covers 50%. To calculate the percentages, we divided each side of the ratio by its total and then multiplied by 100, like this:
(9 / 18)×100 = 50
(9 / 18)×100 = 50
In fractional terms, 9/9 of the pie above is colored in green. This means that the ratio of 9 to 9 or 9:9 can also be expressed as a fraction, where the 9 to the left of the colon is the numerator and the 9 to the right of the colon is the denominator:
9:9 = 9/9
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 9 to 9, the width is 9 and the height is 9. Below is a picture of what a rectangle with a ratio of 9:9 looks like.

Since the simplest form of the fraction 9/9 is 1/1, the simplest form of the ratio 9:9 is also 1:1.
Ratio Calculator
Need information about another ratio? Here you can submit another ratio for us to explain.
Ratio of 9 to 10
Go to the next ratio on our list that we have detailed information about.
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