Ratio of 1 to 9 (1:9)

Ratio of 1 to 9

A ratio of 1 to 9 can be written as 1 to 9, 1:9, or 1/9. Furthermore, 1 and 9 can be the quantity or measurement of anything, such as students, fruit, weights, heights, speed and so on.

A ratio of 1 to 9 simply means that for every 1 of something, there are 9 of something else, with a total of 10.

In the box below, you can enter a number in either box and we will calculate the other number to keep the ratio of 1 to 9. In other words, we will calculate the corresponding equivalent ratio of 1:9 for you.

To calculate the left side of the ratio, our calculator multiplies the right side by 1 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 1. Answers are rounded to two decimals if necessary.

Below is a list of equivalent ratios of 1:9 that we created using our 1:9 ratio calculator above.

1:9

2:18

3:27

4:36

5:45

6:54

7:63

8:72

9:81

10:90

11:99

12:108

We have also created a pie chart for you to put 1:9 ratio in perspective. To do so, we divided a pie into 10 pieces and then colored 1 pieces green and 9 pieces blue. The pie will look exactly the same using any equivalent ratio of 1:9.

1 to 9 pie ratio

The green part of the pie covers 10% and the blue part covers 90%. To calculate the percentages, we divided each side of the ratio by its total and then multiplied by 100, like this:

(1 / 10)×100 = 10
(9 / 10)×100 = 90

In fractional terms, 1/9 of the pie above is colored in green. This means that the ratio of 1 to 9 or 1:9 can also be expressed as a fraction, where the 1 to the left of the colon is the numerator and the 9 to the right of the colon is the denominator:

1:9 = 1/9

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 1 to 9, the width is 1 and the height is 9. Below is a picture of what a rectangle with a ratio of 1:9 looks like.

1 to 9 pie rectangle

Since the simplest form of the fraction 1/9 is 1/9, the simplest form of the ratio 1:9 is also 1:9.

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Ratio of 1 to 10
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