Percentage Calculator

Calculate percentages easily with our versatile calculator. Solve three common percentage problems with instant results.

Simple Percentage Calculator

Please provide any two values below and click the "Calculate" button to get the third value.

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Formula Used:

Result = (Percentage ÷ 100) × Number

Percentage Calculator in Common Phrases

Choose a calculation type and enter values to get instant results.

Formula Used:

Result = (Percentage ÷ 100) × Number

Common Examples

What is 20% of 150?
20% of 150 is 30
30
25 is what % of 200?
25 is 12.5% of 200
12.5%
15 is 25% of what?
15 is 25% of 60
60
What is 75% of 80?
75% of 80 is 60
60

What is a Percentage Calculator?

A Percentage Calculator is a versatile tool that helps you solve three common types of percentage problems: finding what percent one number is of another, finding what a given percentage of a number is, and finding the whole when a part and percentage are known.

This calculator provides instant, accurate results for all three calculation types, making it perfect for students, professionals, and anyone who needs to work with percentages regularly.

Why Use a Percentage Calculator?

Percentage calculations are essential for:

  • Calculating discounts and sale prices
  • Determining tax amounts and tips
  • Analyzing test scores and grades
  • Measuring statistical data and growth rates
  • Calculating commission and interest rates
  • Tracking progress towards goals
Get it on Google Play

How to Use This Calculator

  1. Select the type of calculation you need
  2. Enter the known values in the appropriate fields
  3. The result will appear instantly
  4. Use the copy button to save your result

Practical Applications

  • Calculate discounts and sale prices
  • Determine tax amounts
  • Calculate tips and gratuities
  • Measure test scores and grades
  • Analyze statistical data
  • Calculate commission rates
  • Determine interest amounts
  • Track progress towards goals

Frequently Asked Questions

How do I calculate what is X% of Y?

Multiply Y by (X ÷ 100). For example, to find 20% of 150, calculate 150 × 0.20 = 30.

How do I find what percentage X is of Y?

Divide X by Y and multiply by 100. For example, to find what percentage 25 is of 200, calculate (25 ÷ 200) × 100 = 12.5%.

How do I find the whole when I know the part and percentage?

Divide the part by (percentage ÷ 100). For example, if 15 is 25% of a number, calculate 15 ÷ 0.25 = 60.

Can I use this calculator for decimal percentages?

Yes! The calculator handles decimal percentages like 12.5% or 33.33%.

What if I get an error or unexpected result?

Make sure you have selected the correct calculation type and entered valid numbers in the appropriate fields.

Is this calculator free to use?

Yes, this is a completely free online tool with no limitations or registration required.

Quick Tips

  • • Use the first calculator for "what is X% of Y"
  • • Use the second for "X is what % of Y"
  • • Use the third for "X is Y% of what"
  • • Results update instantly as you type
  • • Copy results for use in other applications
App screenshot

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