Percentage Calculator
Calculate what percentage one number is of another
A percentage calculator is a simple yet powerful tool that helps you quickly figure out percentages no math degree required! Whether you’re trying to work out how much you’ll save during a sale, figure out your exam grade, or calculate interest on savings, this tool can do the job in seconds. It’s perfect for everyday situations where percentages matter.
An online percentage calculator does all the math for you. You just enter a few numbers, and it gives you the answer instantly.
Example:
You want to find 15% of $200.
Enter 200 as the number and 15 as the percent.
The calculator shows 30.
So, 15% of $200 is $30.
If you don’t have a calculator handy, you can still do it yourself using a basic formula:
(Percentage × Total) ÷ 100
Example:
You scored 18 out of 20 on a quiz. What’s your percentage?
Formula: (18 ÷ 20) × 100 = 90%
Common Use Cases
Find Percent of a Number
Use this to figure out how much a percentage equals in real value.
Example: What is 25% of 80?
Formula: (25 × 80) ÷ 100 = 20
Useful when comparing changes over time—like price increases or salary raises.
Example: Your rent went from $800 to $880.
Formula: ((880 – 800) ÷ 800) × 100 = 10% increase
Helps you see how different two numbers are in percentage terms.
Example: Compare 50 and 40.
Formula: ((|50 – 40|) ÷ ((50 + 40) ÷ 2)) × 100 = 22.22%
Quick Reference Formulas
Percentage is a way to express a number as a part of 100. For example, 50% means 50 out of 100.
Use this formula: (Part ÷ Total) × 100
Yes! Use an online percentage calculator or a calculator app.
Use an online percentage calculator. Just plug in your numbers.
Not at all! These tools are beginner-friendly and do all the work for you.
Quickly convert your CGPA to accurate percentage.
