Percent Calculator
Calculate various percentages easily. Includes basic percent, ratio, change rate, discount, and reverse calculation with visual charts.
Percent Calculator
100 x 25% = 2525 / 100 x 100 = 25%(125 - 100) / 100 x 100 = 25%50,000 - (50,000 x 30%) = 35,00035,000 / (1 - 30/100) = 50,000Calculate the original price from a discounted price. For example, if the price after a 30% discount is 35,000, the original price is 50,000.
What is the Percent Calculator?
The Percent Calculator is a tool that allows you to perform various percentage calculations quickly and easily. It offers five calculation functions: basic percent, ratio, change rate, discount, and reverse calculation, with visual charts to help you understand results intuitively.
Key Features
- Basic Percent Calculation – “What is 25% of 100?” type calculations
- Ratio Calculation – “25 is what % of 100?” type calculations
- Change Rate Calculation – Calculate percentage change from one value to another
- Discount Calculation – Calculate final price after applying a discount
- Reverse Calculation – Find original price from discounted price
- Ratio Bar – Display ratios with horizontal bar charts
- Donut Chart – Visualize ratios with circular graphs
- Comparison Bar Chart – Compare before and after values
How to Use
- Select Calculation Type – Choose the desired calculation from the tabs above.
- Enter Values – Input the required numbers.
- View Results – Results are calculated automatically as you type.
- Check Charts – Understand results visually through graphs.
- Copy Results – Use the copy button to save results to clipboard if needed.
Formulas
Basic Percent
B% of A = A x (B / 100)
Ratio Calculation
A is what % of B = (A / B) x 100
Change Rate
Rate of Change = ((New – Old) / Old) x 100
Discount Price
Discounted Price = Original x (1 – Discount Rate / 100)
Reverse Calculation
Original = Discounted / (1 – Discount Rate / 100)
Who Is This For?
- Shoppers – Quickly calculate final prices after discounts
- Price Comparers – Compare which discount offers the best deal
- Analysts – Calculate growth rates for sales, visitors, etc.
- Data Analysts – Calculate and visualize ratios of parts to whole
- Students – Solve math problems involving percentages
- Sellers – Set or reverse-calculate discount rates
Frequently Asked Questions
What’s the difference between percent and percentage points?
Percent refers to a ratio out of 100, while percentage points measure the absolute difference between two percentages. For example, if a rate goes from 10% to 15%, it increased by 5 percentage points but increased by 50% in relative terms.
Is 50% off then 20% off the same as 70% off?
No. Stacked discounts don’t add up simply. A $100 item with 50% off becomes $50, then 20% off that makes $40. The actual discount is 60%. Formula: 1 – (1-0.5) x (1-0.2) = 0.6 = 60%
How are increase and decrease rates different?
Increase rates are shown as positive (+), decrease rates as negative (-). Going from 100 to 120 is +20% increase; from 100 to 80 is -20% decrease. This calculator automatically identifies increase/decrease and distinguishes them with colors and icons.
How are decimal places handled?
Results are displayed to two decimal places. Price calculations are rounded to whole numbers. Copy the result if you need the exact value for further calculations.