18/32 as a percentage is 56.25%. This value tells you how much of a whole the fraction represents when the whole is split into 100 equal parts.
The fraction 18/32 can be simplified to 9/16, which still gives the same percentage. Both forms show that a little more than half of the whole is being taken.
In everyday situations, you might see this percentage used to describe a test score, a discount, or any situation where a part of a whole needs to be expressed in a familiar way. Knowing that 18/32 equals 56.25% makes it easy to compare with other percentages.