What is 21/42 as a percentage? It is 50.00%.
The fraction 21/42 can be reduced easily; both numbers share the same factor of 21, so the fraction simplifies to 1/2. Being exactly one half means it occupies half of any whole.
Because a half always represents fifty percent, the percentage form of 21/42 is 50.00% when rounded to two decimal places. This makes it straightforward to compare with other percentages or use in calculations.
In everyday terms, if you had 42 pieces of something and you took 21 of them, you’d have taken exactly half, or 50.00%, of the total. This simple relationship is useful in many real‑world situations, from splitting a bill to measuring progress.
