%MATH
Percentage Calculator
Handle the two most common percentage questions with one simple calculator.
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Formula
For “What is X% of Y?”, multiply Y by X ÷ 100. For “X is what % of Y?”, divide X by Y and multiply by 100.
X% of Y = Y × X ÷ 100
X as % of Y = X ÷ Y × 100
X as % of Y = X ÷ Y × 100
How it works
1
Choose the percentage question you want to solve.
2
Enter the values requested for that mode.
3
Calculate and use the result directly or compare it with the result breakdown.
Important notes
For the “X is what % of Y?” mode, Y cannot be zero.
This tool focuses on basic percentage arithmetic and does not add or subtract any hidden values.