Basic Percentage

= 0

Formula: (X / 100) × Y

What Percent Is?

is 0% of

Formula: (X / Y) × 100

From

= 0%

Formula: ((new - old) / old) × 100

of what? 0

Formula: (X × 100) / Y

Original

Final Price 0

Difference 0

Our free percentage calculator helps with everyday math and professional calculations:

Shopping & Sales
Calculate discounts, figure out final prices after markups, and compare deals to find the best value.
Finance & Investments
Track investment returns, calculate interest rates, and analyze financial growth or decline percentages.
Business & Pricing
Set markup percentages for products, calculate profit margins, and determine pricing strategies.
Academics & Statistics
Calculate grade percentages, analyze data changes, and work through statistics problems easily.
Health & Fitness
Track weight loss percentages, calculate body fat changes, and monitor fitness progress over time.

What types of percentage calculations are supported?: Our calculator handles five types: basic percentage (X% of Y), what percent (X is what % of Y), percentage change, finding original values, and markup/discount calculations.
How accurate are the calculations?: Our calculator uses precise floating-point arithmetic and displays results with appropriate decimal places. Results are accurate for all practical financial, academic, and professional uses.
Can I calculate negative percentages?: Yes! Negative percentages are fully supported for calculating decreases, discounts, and losses. The calculator clearly indicates whether a change represents an increase or decrease.
Is my data saved between sessions?: Yes, your input values are automatically saved in your browser's local storage. When you return, your previous calculations will be restored for convenience.
Does this calculator work offline?: Yes! Once the page loads, all calculations happen locally in your browser. You can calculate percentages without an internet connection anytime.