Percentage Calculator
Free Percentage Calculator: A versatile tool for percent change, 'what is X% of Y', and other common percentage calculations.
Inputs
Enter the required values to calculate.
Result
The calculated result will appear here.
More Information
Understanding the Percentage Calculator
Percentages are a fundamental part of everyday math, from shopping discounts to financial reports. This tool provides three common percentage calculations in one place.
1. What is X% of Y?
This calculation finds a specific percentage of a given number. It's useful for figuring out tips, commissions, or sales tax.
Formula: Result = (Percentage / 100) * Value
2. X is what % of Y?
This calculation determines what percentage one number is of another. It's perfect for figuring out how much of a task is complete or your score on a test.
Formula: Result = (Part / Whole) * 100
3. Percentage Change
This calculation finds the percentage increase or decrease from an original value to a new value. It's used to track stock price changes, population growth, or changes in your own metrics like weight.
Formula: Result = ((New Value - Original Value) / Original Value) * 100
For more complex math, try our Scientific Calculator.