Percentage Calculator 🧮
Calculate percentages easily for math, finance, shopping discounts, tip calculations, and more. Free, accurate, and lightning fast!
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Why Use Our Percentage Calculator?
Lightning Fast
Get instant percentage calculations without any delays or waiting time.
Highly Accurate
Precise calculations based on mathematical formulas with no rounding errors.
Mobile Friendly
Works perfectly on all devices - smartphones, tablets, and desktops.
Multiple Modes
Calculate percentages, find percentage of values, increases, decreases and more.
No Installation
Use our calculator directly in your browser - no downloads or installs needed.
No Data Storage
We don't store any of your input data - your calculations remain completely private.
How To Calculate Percentages
Basic Percentage
To find X% of Y: Multiply Y by X/100. For example, 15% of 200 is 200 × (15/100) = 30.
Percentage Of
To find what percentage X is of Y: Divide X by Y and multiply by 100. For example, 30 is (30/200) × 100 = 15% of 200.
Percentage Change
To calculate percentage increase/decrease: ((New Value - Original Value) / Original Value) × 100.
Frequently Asked Questions
A percentage is a way to express a number as a fraction of 100. It is often denoted using the percent sign, "%". For example, 45% represents 45 out of 100, or 45/100 = 0.45.
To calculate a percentage of a number, multiply the number by the percentage divided by 100. For example, to find 20% of 250, calculate 250 × (20/100) = 50.
Percentage increase is calculated by finding the difference between the new value and original value, dividing that difference by the original value, and then multiplying by 100. For example, if a product's price increases from $50 to $60, the percentage increase is ((60-50)/50) × 100 = 20%.
Percentage decrease is calculated similarly to increase. Find the difference between the original value and new value, divide by the original value, and multiply by 100. For example, if a product's price decreases from $80 to $64, the percentage decrease is ((80-64)/80) × 100 = 20%.
Percentages are used in many everyday situations including calculating discounts during shopping, determining tips at restaurants, understanding interest rates on loans, analyzing statistics, and comparing changes in values over time.