Percentage Calculator

The Percentage Calculator is a quick and easy way to solve everyday percentage calculations without memorizing formulas. Whether you're calculating a discount while shopping, finding a percentage increase in sales, working out a tip, checking exam results, or calculating profit margins, this tool provides accurate answers instantly.

Percentages are used in almost every aspect of daily life, from personal finance and budgeting to business reporting and education. Instead of performing calculations manually, simply enter your values and let the calculator do the work.

Why Use a Percentage Calculator?

Percentage calculations are common but can sometimes be confusing, especially when working with increases, decreases, discounts, or reverse percentages. A Percentage Calculator removes the guesswork by applying the correct formula automatically, helping you save time and avoid costly mistakes.

Whether you're a student, shopper, business owner, accountant, teacher, or simply managing your personal finances, this calculator makes percentage calculations simple and accurate.

Features

• Calculate a percentage of any number
• Find what percentage one number is of another
• Calculate percentage increases and decreases
• Work out discounts and sale prices
• Calculate tips and gratuities
• Determine profit margins and markups
• Calculate grades and test scores
• Fast and accurate results
• Works on desktop, tablet, and mobile devices
• No downloads or registration required

How To Use the Percentage Calculator

• Select the type of percentage calculation you want to perform.
• Enter the required numbers into the calculator.
• Click Calculate.
• View your result instantly.
• Adjust the values to perform additional calculations if required.

Calculation Examples

Calculate a Percentage of a Number

Find a percentage of any value.

Examples

• 15% of $200 = $30
• 25% of $480 = $120
• 7.5% of $800 = $60

Perfect for calculating tax, commission, interest, and discounts.

Find What Percentage One Number Is of Another

Determine what percentage one value represents compared to another.

Examples

• 25 is what percentage of 100? = 25%
• 54 is what percentage of 72? = 75%
• 180 is what percentage of 240? = 75%

Useful for grades, sales targets, performance tracking, and statistics.

Calculate Percentage Increase

Measure how much a value has increased compared to its original amount.

Example

Original Price: $80

New Price: $100

Increase: $20

Percentage Increase: 25%

Common uses include:

• Salary increases
• Business growth
• Revenue comparisons
• Website traffic analysis
• Investment performance

Calculate Percentage Decrease

Calculate how much a value has decreased from its original amount.

Example

Original Price: $500

New Price: $400

Decrease: $100

Percentage Decrease: 20%

Useful for:

• Price reductions
• Budget cuts
• Inventory changes
• Performance comparisons

Calculate Discounts

Quickly find the amount you'll save during a sale.

Example

Original Price: $120

Discount: 25%

You Save: $30

Final Price: $90

Ideal for shopping, online purchases, and retail price comparisons.

Calculate Restaurant Tips

Determine the correct tip based on your bill.

Example

Restaurant Bill: $80

Tip: 15%

Tip Amount: $12

Total Bill: $92

Perfect for restaurants, cafés, food delivery, and travel.

Calculate Profit Margin

Find your profit margin based on the selling price.

Example

Cost Price: $400

Selling Price: $600

Profit: $200

Profit Margin: 33.3%

Useful for businesses, freelancers, retailers, and online sellers.

Calculate Product Markup

Calculate how much you've increased the selling price above the original cost.

Example

Cost Price: $500

Selling Price: $700

Markup: 40%

Frequently used in retail, wholesale, ecommerce, and manufacturing.

Calculate Exam Grades

Find your percentage score from your marks.

Example

Marks Scored: 42

Total Marks: 50

Grade: 84%

Useful for students, teachers, and educational institutions.

Reverse Percentage Calculations

Work backwards to find the original value before a discount or increase.

Example

A product costs $90 after a 10% discount.

Original Price = $100

Useful for retail pricing, accounting, budgeting, and financial planning.

Common Uses

People use the Percentage Calculator to:

• Calculate shopping discounts
• Compare sale prices
• Work out tips and gratuities
• Calculate tax and VAT
• Determine exam grades
• Measure salary increases
• Track business growth
• Calculate profit margins
• Price products with markups
• Analyze financial performance
• Manage personal budgets
• Verify everyday percentage calculations

Tips for Better Results

• Check that you've entered the correct values before calculating.
• Make sure you're using the correct calculation type, such as percentage increase, decrease, or discount.
• Use the calculator to verify manual calculations for greater accuracy.
• Remember that a percentage increase and a percentage decrease are calculated differently.
• When comparing two values, always use the original amount as the starting point.

Frequently Asked Questions

What can the Percentage Calculator calculate?

It can calculate percentages of numbers, percentage increases, percentage decreases, discounts, tips, grades, profit margins, markups, and many other common percentage calculations.

How do I calculate a percentage of a number?

Enter the percentage and the original value into the calculator. For example, 20% of $150 equals $30.

What's the difference between percentage increase and percentage decrease?

A percentage increase shows how much a value has grown from its original amount, while a percentage decrease shows how much it has fallen.

Can I calculate shopping discounts?

Yes. Enter the original price and the discount percentage to see both your savings and the final sale price.

Can I calculate my exam percentage?

Yes. Enter your score and the total possible marks to calculate your percentage grade instantly.

Is this calculator useful for businesses?

Absolutely. Businesses commonly use it to calculate profit margins, markups, pricing changes, sales growth, discounts, and financial reports.

Is my information stored?

No. Your calculations are processed in your browser and are not saved or shared.

Is the Percentage Calculator free?

Yes. You can perform unlimited percentage calculations online without creating an account or downloading software.