Handy Tools Kit

Percentage Calculator

Calculate percentages, increases, decreases, and differences between values with our free online percentage calculator. Versatile tool for all percentage calculations.

Percentage Calculator

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

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Percentage Calculator in Common Phrases

Calculate percentages using common phrase formats to find missing values in percentage calculations.

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Percentage Difference Calculator

Calculate the percentage difference between two values.

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Percentage Change Calculator

Calculate the result of a percentage increase or decrease on a value.

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Percentage Calculator

What is a Percentage Calculator?

A percentage calculator is a tool that helps you perform various calculations involving percentages. Percentages are a way to express a value as a fraction of 100, making it easier to understand proportions, changes, and comparisons between values.

Our percentage calculator offers multiple calculation modes to handle different percentage-related tasks:

  1. Basic Percentage Calculator: Find a percentage of a number (e.g., what is 15% of 200?)
  2. Common Phrases Calculator: Calculate percentages using everyday language patterns
  3. Percentage Difference Calculator: Compare two values and find the percentage difference
  4. Percentage Change Calculator: Calculate increases or decreases by a percentage

Why Use Our Percentage Calculator?

  • Quick and Accurate: Get instant results without manual calculation errors
  • Multiple Calculation Modes: Solve different types of percentage problems in one place
  • User-Friendly Interface: Simple design that's easy to use for anyone
  • Free to Use: No subscriptions or fees required
  • No Installation Required: Works in your browser on any device

How to Use the Percentage Calculator

Basic Percentage Calculator

  1. Enter the percentage in the first input field
  2. Enter the value in the second input field
  3. Click "Calculate" to get the result (or the calculator will automatically calculate after you enter both values)
  4. The result will show what the specified percentage of your value equals

Common Phrases Calculator

Use the different phrasings based on what you're trying to calculate:

  • "What is X% of Y?" - Find a percentage of a number
  • "X is what % of Y?" - Find what percentage one number is of another
  • "X is Y% of what?" - Find the whole when you know a part and its percentage

Percentage Difference Calculator

  1. Enter the first value
  2. Enter the second value
  3. Click "Calculate" to see the percentage difference between the two values

Percentage Change Calculator

  1. Enter the original value
  2. Select "Increase" or "Decrease" from the dropdown
  3. Enter the percentage of change
  4. Click "Calculate" to see the resulting value after the change

Common Percentage Formulas

  1. Finding a percentage of a value:

    Result = (Percentage ÷ 100) × Value

  2. Finding what percentage X is of Y:

    Percentage = (X ÷ Y) × 100

  3. Percentage difference:

    Percentage Difference = (|A - B| ÷ ((A + B) ÷ 2)) × 100

  4. Percentage increase:

    Percentage Increase = ((New Value - Original Value) ÷ Original Value) × 100

  5. Percentage decrease:

    Percentage Decrease = ((Original Value - New Value) ÷ Original Value) × 100

Our calculator handles all these formulas automatically, saving you time and ensuring accurate results for all your percentage calculations.

Frequently Asked Questions

How do I calculate a percentage of a number?

To calculate a percentage of a number, multiply the number by the percentage divided by 100. For example, to find 20% of 150, multiply 150 by (20/100) which equals 30.

How do I calculate what percentage one number is of another?

To find what percentage one number is of another, divide the first number by the second number and multiply by 100. For example, to find what percentage 30 is of 150, calculate: (30 ÷ 150) × 100 = 20%.

How do I calculate percentage increase or decrease?

To calculate percentage increase or decrease, find the difference between the new value and the original value, divide by the original value, and multiply by 100. For example, if a price changes from $80 to $100, the increase is: ((100 - 80) ÷ 80) × 100 = 25%.

What is the formula for percentage difference?

The percentage difference between two values is calculated as: ((|A - B|) ÷ ((A + B) ÷ 2)) × 100, where A and B are the two values and |A - B| is the absolute difference. This gives you the percentage difference relative to the average of the two values.

How do I calculate a reverse percentage?

To calculate a reverse percentage (finding the original value when you know the final value after a percentage change), divide the final value by (1 + the percentage/100) for increases, or divide by (1 - the percentage/100) for decreases. For example, if a price after a 25% increase is $100, the original price was $100 ÷ 1.25 = $80.