✓ Free Online Calculator

Percentage Calculator – Calculate Percentages Instantly

Use our free Percentage Calculator to calculate percentages, increases, decreases, differences, discounts and tips in seconds. Enter your numbers and get an instant result.

✓ 100% Free ✓ No Signup ✓ No Download ✓ Instant Results

All-in-One Percentage Calculator

Choose a calculation below and enter your numbers.

What is X% of Y?

Find any percentage of a number instantly.

Percentage (%)

Number

Result 0

Enter your numbers above.

X is What Percent of Y?

Find what percentage one number represents of another.

First Number

Second Number

Result 0%

Enter your numbers above.

Percentage Increase or Decrease

Calculate the percentage change between an original value and a new value.

Original Value

New Value

Percentage Change 0%

Enter the original and new values.

Percentage Difference

Compare two values and calculate their percentage difference.

First Value

Second Value

Percentage Difference 0%

Enter two values above.

Discount Calculator

Find the final price and how much you save after a percentage discount.

Original Price ($)

Discount (%)

Final Price $0.00

Enter a price and discount.

Tip Calculator

Calculate a tip and the total amount of your bill.

Bill Amount ($)

Tip (%)

Total With Tip $0.00

Enter your bill and tip percentage.

How Does a Percentage Calculator Work?

A Percentage Calculator makes everyday percentage calculations faster and easier. Instead of manually working through formulas, enter the values into the appropriate fields and the result appears instantly.

Percentages are used in shopping, finance, school, business, statistics, taxes, price comparisons and many other everyday situations. Understanding how percentages work can help you compare values and make better calculations.

Percentage of a number = (Percentage ÷ 100) × Number

For example, to find 20% of 150, divide 20 by 100 and multiply the result by 150. The answer is 30.

How to Use the Percentage Calculator

The Percentage Calculator includes several common calculations in one place. Select the calculation you need, enter the requested values and press Calculate. You can also move between the tabs to perform a different calculation without leaving the page.

Calculate a Percentage of a Number

Choose the “X% of Y” option when you need to know a specific percentage of a value. For example, 15% of 200 equals 30.

Find What Percent One Number Is of Another

If you know two numbers but need to determine their percentage relationship, divide the first number by the second and multiply by 100. For example, 30 is 20% of 150.

Calculate Percentage Increase or Decrease

Enter an original value and a new value to determine how much the number increased or decreased as a percentage of the original amount.

Percentage Calculator for Everyday Calculations

This Percentage Calculator can be useful for many common situations, from checking a sale price to comparing changes in numbers. Because calculations happen directly in your browser, results appear immediately and no account is required.

Shopping Discounts Calculate sale prices and see exactly how much money you save.

Price Changes Measure how much a price increased or decreased over time.

Tips Calculate a restaurant tip and the final bill amount.

Business Compare changes in sales, costs, revenue and other values.

School Work through common percentage problems and verify calculations.

Everyday Math Quickly calculate percentage relationships between numbers.

How to Calculate Percentage Increase

Percentage increase measures how much a value has grown compared with its original value. Subtract the original number from the new number, divide the difference by the original number and multiply by 100.

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

If a value rises from 100 to 125, the difference is 25. Dividing 25 by 100 and multiplying by 100 gives a 25% increase.

How to Calculate Percentage Decrease

Percentage decrease shows how much a number has fallen compared with its starting value. This is commonly useful for discounts, price changes, budgets and performance comparisons.

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

The Percentage Calculator automatically identifies whether your new value represents an increase or a decrease and displays the result clearly.

How to Calculate Percentage Difference

Percentage difference is useful when comparing two values without treating either one as the original value. It measures the absolute difference relative to the average of the two numbers.

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

You can use the Percentage Calculator above to compare two numbers instantly without calculating the formula manually.

Calculate Discounts and Sale Prices

When an item is discounted by a percentage, multiply the original price by the discount rate to determine the savings. Subtract the savings from the original price to find the final sale price.

For example, a $100 item with a 25% discount saves you $25 and has a final price of $75. The Percentage Calculator includes a dedicated discount option so you can calculate both values at once.

Fast, Free and Easy to Use

The Percentage Calculator is designed to give you quick answers without unnecessary steps. There is no registration, software installation or download required.

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Instant Results Get calculations in seconds.

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Free to Use No account or payment required.

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Mobile Friendly Works on phones, tablets and computers.

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Browser Based Calculations run directly on your device.

Percentage Calculator FAQ

Divide the percentage by 100 and multiply it by the number. For example, 20% of 150 is 0.20 × 150, which equals 30.

Divide the first number by the second number and multiply the result by 100. For example, 30 divided by 150 multiplied by 100 equals 20%.

Subtract the original value from the new value, divide the difference by the absolute value of the original number and multiply by 100.

Multiply the original price by the discount percentage divided by 100. Subtract that amount from the original price to find the final price.

Yes. You can use the calculator without creating an account, downloading software or paying a fee.

Yes. The tool is designed to work on modern phones, tablets, laptops and desktop computers.

Calculate Your Percentage Now

Use the free Percentage Calculator whenever you need a fast and simple percentage calculation.

Calculate Now