Central Tools

Free Percentage Calculator - Calculate Percentages Online

Calculate percentages, percentage increase, decrease, and differences instantly. Free online percentage calculator for all your math needs.

Result
Result
0.00

Formulas

Basic Percentage: (Percentage / 100) × Value
Percentage Change: [(New - Old) / Old] × 100
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How to use Free Percentage Calculator - Calculate Percentages Online

1

Choose the type of calculation you need

2

Enter the required values

3

View instant results

4

Switch between different percentage calculations

Why use this tool?

Multiple Modes

Calculate various percentage operations

Instant Results

Real-time calculation as you type

Easy to Use

Simple interface for quick calculations

Free Percentage Calculator - Solve All Percent Problems Online

Quickly solve any percentage-related math problem with our comprehensive suite of calculators. Whether you need to find a percentage of a number, calculate a price increase, determine a discount, or find the percentage difference between two values, our tool provides instant, accurate answers. Perfect for students, business owners, and shoppers.

Quick How-To Guide

  1. 1Enter the numbers into the relevant boxes (e.g., "What is 20% of 150?")
  2. 2Switch tabs to access "Percentage Increase" or "Percentage Decrease" modes
  3. 3The tool calculates the answer automatically as you input the data
  4. 4Read the resulting value and the summarized sentence explanation
  5. 5Copy the result for use in your spreadsheets or reports

Why use our tool?

Multiple calculation modes—Percentage of, Percent Increase, Percent Decrease, and Difference
Real-time results—answers appear instantly as you type numbers
Precision control—choose the number of decimal places for your answer
Copy results—one-click button to copy calculated values to your clipboard
Explain the math—shows the underlying formula used for each calculation
Mobile optimized—easy-to-use interface for quick calculations on your smartphone

Frequently Asked Questions

Find answers to common questions about using our tool, its features, and how it handles your data privacy.

To find the percentage increase: Subtract the old value from the new value, divide that by the old value, and then multiply by 100. Our "Percent Increase" mode automates this for you instantly.
The formula is (Part / Total) * 100. For example, if you got 45 out of 60 on a test, you would do (45/60)*100 = 75%. Our tool handles these ratios in seconds.
Simply use the basic percentage mode. If an item is $100 and tax is 8%, calculate "8% of 100" to get $8. Add that to the original for a total of $108.
If something is 20% off and costs $80, you can use our "Percentage Decrease" mode in reverse or calculate: 80 / (1 - 0.20) = $100 original price.
Yes, our tool uses high-precision floating-point math. However, different businesses have different rounding rules (e.g., rounding up vs. rounding to the nearest cent). Always verify against your specific accounting standards.
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