What is the ratio of 10 cm to 5 m?

Well, isn't that just a happy little question. Let's see here. To find the ratio of 10 cm to 5 m, we need to make sure we're comparing the same units. Since 1 m is equal to 100 cm, we can convert 5 m to 500 cm. So, the ratio of 10 cm to 500 cm is simply 1:50.