Percentage Calculator
Free percentage calculator to find what X% of Y is, calculate percentage increase or decrease, and solve percentage problems with step-by-step solutions.
Related Calculators
You might also find these calculators useful
Master Percentage Calculations Instantly
Whether you're calculating discounts while shopping, figuring out test scores, or analyzing business metrics, our percentage calculator makes it effortless. Get accurate results in seconds with clear explanations of how each calculation works.
What Is a Percentage?
A percentage is a way of expressing a number as a fraction of 100. The word 'percent' comes from the Latin 'per centum,' meaning 'by the hundred.' Percentages are used everywhere in daily life—from sales tax and tips to grades and statistics. Understanding percentages helps you make better financial decisions, interpret data accurately, and solve countless everyday problems.
Basic Formula
Percentage = (Part / Whole) × 100Why Use Our Percentage Calculator?
Multiple Calculation Types
Calculate 'X% of Y', find what percentage X is of Y, calculate percentage increase or decrease, and more—all in one tool.
Step-by-Step Explanations
See exactly how each calculation is performed so you can learn and verify the math yourself.
Instant Precision
Get accurate results immediately without manual calculations or formula memorization.
How to Use the Percentage Calculator
Common Percentage Calculations
Shopping Discounts
Calculate how much you'll save with a 25% off sale or determine the final price after multiple discounts.
Grade Calculations
Convert your test score to a percentage or find out what score you need to achieve your target grade.
Business Metrics
Calculate profit margins, growth rates, conversion rates, and other key performance indicators.
Tip Calculations
Quickly figure out 15%, 18%, or 20% tips at restaurants without mental math.
Frequently Asked Questions
To calculate percentage increase, subtract the original value from the new value, divide by the original value, and multiply by 100. Formula: ((New - Original) / Original) × 100. For example, if a price goes from $80 to $100, the increase is ((100-80)/80) × 100 = 25%.