Percentage Calculator
Solve 4 common percentage calculations instantly: What is X% of Y, X is what % of Y, percentage increase/decrease between two numbers, and discount/tax calculations.
? How to use Percentage Calculator
- 1 Choose which calculation you need from the 4 interactive calculation cards.
- 2 Enter your values in the designated input fields.
- 3 The result calculates immediately with formula explanation and step breakdown.
Key Features & Privacy Guarantee
- 4 calculators in one: Value of %, Percentage ratio, % Change, Discount/Tax
- Real-time instant results as you type
- Visual indicator for percentage increase (+) vs decrease (-)
- Clear formula breakdown for every calculation
- 🔒 Complete Privacy: All computations, conversions, and renders occur locally in your browser. No files or personal data are ever uploaded to any server.
About Percentage Calculator
Percentage Calculator combines the four calculations people use most: what is X percent of Y, what percent one number is of another, the percentage change between two values, and discounts or tax on a price. Results update as you type.
Each result includes the formula and the steps behind it, so you can understand the answer and check it. Increases and decreases are marked clearly. Everything is calculated in your browser.
Common ways to use it
- Work out the sale price after a percentage discount.
- Calculate tax or a tip on a bill.
- Find the percentage increase or decrease between two numbers, such as monthly sales.
Percentage Calculator FAQ
How do I calculate percentage change?
Subtract the old value from the new value, divide by the old value, and multiply by 100. The tool does this for you and shows the steps.
Can I use it for discounts?
Yes. Enter the original price and the discount percentage to see the amount saved and the final price.
What is the difference between percent and percentage points?
A percent change compares two values relative to the first. Percentage points are the plain difference between two percentages.