**What is 21/42 as a percentage? **The answer is 50.00%.
The fraction 21/42 can be reduced by dividing both numbers by 21, giving you 1/2. A half is the same as fifty percent, so the percentage shows exactly the same size as the original fraction.
Knowing that 21/42 equals 50.00% can be handy when you compare parts of a whole, such as sharing a pizza or splitting a bill. It lets you see at a glance that each part is exactly half of the total.
