Math & Calculator
Percentage Calculator
Calculate percentages, percentage change, and what percent of a number
How to Use
Enter Numbers
Set Parameters
Calculate
View Results
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What Is Percentage Calculator?
Percentage Calculator is a free online tool that performs all common percentage calculations. Find percentages of numbers, calculate percentage changes, and solve reverse percentage problems instantly.
Key Features
Calculate percentage of any number. Find percentage increase or decrease between two values. Determine what percent one number is of another. Reverse percentage calculations. Real-time results as you type.
Benefits
Solve everyday percentage problems without mental math. Accurate calculations for financial, academic, and business use. Multiple calculation modes cover all percentage scenarios.
Use Cases
Calculate discounts and sales tax. Determine grade percentages for exams. Figure out tip amounts at restaurants. Calculate profit margins and markup percentages.
Tips for Best Results
For percentage increase, subtract the original from the new value, divide by the original, and multiply by 100. The tool does this automatically. Double-check financial calculations by working backwards.
Frequently Asked Questions
Enter the percentage and the number. For example, to find 15% of 200, enter 15 and 200. The tool calculates the result (30) instantly.
Yes. Enter the original and new values to find the percentage change. The tool shows whether it is an increase or decrease and by how much.
Enter both numbers and the tool calculates what percentage the first number is of the second. For example, 25 is 50% of 50.
Yes. If you know the result and the percentage, the tool can find the original number. For example, if 20% of X is 40, then X is 200.
Yes. Enter percentages with decimals like 7.5% or 12.25%. The tool handles fractional percentages with full precision.