Percentage Calculator
Solve common percentage math.
Calculate percentages and percentage change in one compact tool.
Percentage Inputs
Part divided by whole gives the percentage.
Percentage Summary
How It Works
Select Calculation Type
Choose between 'X is what % of Y', 'X% of Y', or 'Percentage Increase/Decrease'.
Enter Numbers
Enter the required numeric values into the input fields.
Click Calculate
Get your result instantly along with a breakdown of the math.
Switch Variants
Try different variants of the same numbers to solve different parts of the problem.
Percentage Calculator Overview
A general-purpose Percentage Calculator handles the most common percentage problems people run into — finding what percentage one number is of another, finding a percentage of a number, and calculating percentage increase or decrease between two values.
Why Use This Calculator
- Handles multiple percentage calculation types in one tool
- Great for shopping discounts, grades, and financial math
- Instant, accurate results with no manual formulas
- Works for both increases and decreases
Common Formulas
Ratio: (X ÷ Y) × 100
Value: (X ÷ 100) × Y
Change: [(New − Old) ÷ Old] × 100
Frequently Asked Questions
A percentage increase is relative (e.g., going from 10% to 15% is a 50% increase), while a percentage point difference is absolute (a 5 percentage point increase). These are commonly confused.