Percentage Calculator

Easily find the percentage of a number, percentage increase, or percentage difference.

About Percentage Calculator

Struggling with math? The Free Percentage Calculator is the Best Percent Change Tool to rapidly calculate percentages accurately.

Features

• Calculate "What is X% of Y?"
• Calculate "X is what percent of Y?"
• Calculate percentage increase and decrease
• Instant calculation as you type
• Handles decimals and large numbers smoothly

How to Use

1. Select the type of percentage calculation you need from the available options.
2. Enter the values into the respective fields.
3. The result will automatically calculate and display below.
4. Click to copy the result if needed.

Frequently Asked Questions

How do I calculate a 20% discount?

Use the "Percentage Decrease" section. Enter the original price, then enter 20 as the percentage to see the final discounted price.

What is the formula for percentage increase?

The formula is: ((New Value - Old Value) / Old Value) * 100.

Can I use this for sales tax?

Absolutely. Use the "What is X% of Y" to find the tax amount, or use Percentage Increase to find the total cost including tax.

Are negative percentages allowed?

Yes, entering negative numbers will accurately calculate inverse percentages and drops in value.

Can it calculate percentage decrease?

Yes, it handles both percentage increases (like tax) and decreases (like discounts).

What does 'X is what % of Y' mean?

It finds the ratio. For example, '20 is what % of 100' results in 20%.

Are the results rounded?

Results are displayed with up to two decimal places for accuracy.

Is this a free percentage calculator?

Yes, this free percentage calculator is unlimited.

Why use the best percent change tool?

It takes the confusion out of common percentage formulas.

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