Percentage Calculator – Calculate Percentages Easily

Intro

A Percentage Calculator online is a quick and easy tool that helps you calculate percentages without doing manual math. Percentages are used in finance, shopping discounts, tax, statistics, grades, and everyday decision-making.

Instead of struggling with formulas, this tool allows you to find percentages instantly. Whether you want to know “What is 20% of 500?”, “What percent is 40 of 200?”, or “How much percent increase from 120 to 150?”, the Percentage Calculator makes it simple.

This tool is especially useful for students, business owners, accountants, and shoppers who deal with percentages every day.

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Formula / Working

The Percentage Calculator works on the basic percentage formulas:

1. Finding a percentage of a number:

Percentage of a Number=PartWhole×100\text{Percentage of a Number} = \frac{\text{Part}}{\text{Whole}} \times 100Percentage of a Number=WholePart​×100

Example: 40 is what percent of 200? 40200×100=20%\frac{40}{200} \times 100 = 20\%20040​×100=20%

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2. Finding a number from percentage:

Part=Percentage×Whole100\text{Part} = \frac{\text{Percentage} \times \text{Whole}}{100}Part=100Percentage×Whole​

Example: What is 25% of 600? 25×600100=150\frac{25 \times 600}{100} = 15010025×600​=150

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3. Percentage Increase/Decrease:

Percentage Change=New Value – Old ValueOld Value×100\text{Percentage Change} = \frac{\text{New Value – Old Value}}{\text{Old Value}} \times 100Percentage Change=Old ValueNew Value – Old Value​×100

Example: Increase from 120 to 150: 150−120120×100=25%\frac{150 – 120}{120} \times 100 = 25\%120150−120​×100=25%

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Step-by-Step Usage

Here’s how to use the Percentage Calculator online:

1. Enter the values (part, whole, or percentage depending on your case).
2. Select the type of calculation (percentage of a number, percentage change, or find a number from percentage).
3. Click the Calculate button.
4. The result will appear instantly on your screen.

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Examples

Example 1: Shopping Discount

A jacket costs $80, and the discount is 30%. 30×80100=24\frac{30 \times 80}{100} = 2410030×80​=24

✅ Discount = $24 → Final Price = $80 – $24 = $56.

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Example 2: Student Grades

A student scored 45 marks out of 60. 4560×100=75%\frac{45}{60} \times 100 = 75\%6045​×100=75%

✅ The student scored 75%.

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Example 3: Salary Increase

An employee’s salary increased from $2,000 to $2,400. 2400−20002000×100=20%\frac{2400 – 2000}{2000} \times 100 = 20\%20002400−2000​×100=20%

✅ The salary increased by 20%.

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FAQs

1. What is a Percentage Calculator?
It is an online tool that helps you calculate percentages instantly, without manual formulas.

2. Can it calculate percentage increase and decrease?
Yes, it can calculate percentage growth, decrease, or difference between two numbers.

3. Who can use this tool?
Students, teachers, accountants, business owners, and anyone dealing with percentages.

4. Is the tool free to use?
Yes, the Percentage Calculator is completely free and works on all devices.

5. Can I calculate discounts with it?
Absolutely! Just enter the price and discount percentage to get the final price.