Percentage Calculator
Quickly calculate percentages, find what percent one number is of another, or compute percentage increases and decreases.
About This Calculator
The Percentage Calculator offers three essential modes: finding what X% of Y is, determining what percentage X is of Y, and computing the percentage change between two values (increase or decrease). Percentages are fundamental in everyday life — from calculating tips and discounts to understanding financial returns and grade scores.
How to Use
- Enter your values in the input fields above
- Click the calculate button to see results
- Review your results displayed below the inputs
- Use the reset button to clear all fields and start over
Frequently Asked Questions
What is the "X% of Y" mode?
This mode calculates a specific percentage of a given number. For example, 15% of 200 equals 30.
How does the "X is what % of Y" mode work?
Enter two numbers and the calculator tells you what percentage the first number is of the second. For example, 50 is 25% of 200.
What does "% Change" calculate?
It computes the percentage increase or decrease from the original value to the new value. For example, going from 100 to 125 is a 25% increase.
Is this calculator free to use?
Yes! All calculators on Get Precision Calculator are completely free with no limitations or sign-up required.
Is my data saved or tracked?
No. All calculations are performed locally in your web browser. Get Precision Calculator does not store, collect, or track your calculation data.
Related Calculators
You might also be interested in these

Basic Calculator
Perform basic arithmetic operations like addition, subtraction, multiplication, and division with decimal support.

Unit Converter
Convert between units of length, weight, temperature, volume, area, and speed instantly.

Age Calculator
Calculate your exact age in years, months, and days from your birth date.