5/21 as a percentage is 23.81%. This is the rounded value you get when you change the fraction to a percent, and it’s a handy number to remember for quick estimates.
The fraction 5/21 can be simplified only by dividing both numerator and denominator by 1, so it stays as it is. It represents five parts out of a total of twenty‑one equal parts, which is why it’s a bit more than one‑quarter but less than one‑third.
When you need to compare this fraction to other numbers, thinking of it as 23.81% makes it easier to see where it falls on a scale of 0 to 100. For example, if you have a test score of 5 out of 21 possible points, you’ve earned roughly a quarter of the total points.
In everyday situations, such as measuring ingredients or dividing a group, converting 5/21 to 23.81% helps you communicate the portion in a way most people understand quickly.
