Percentage Calculator

Eliminate Math Errors with Precision Percentage Tools

From determining a test score to tracking financial growth or calculating a discount, our Percentage Calculator delivers instant accuracy. Manual percentage math is prone to simple errors that can have costly results. This tool automates the process, supporting four distinct calculation modes: finding the percentage of a whole, determining percentage increase or decrease, calculating specific values, and converting fractions.

Unlike basic calculators, this tool provides a step-by-step breakdown of the formula used. This educational feature is perfect for students learning math concepts, business professionals auditing figures, or shoppers verifying discount accuracy.

How to Use the Percentage Calculator

1. Select Calculation Mode: Use the tabs to choose between "Basic Percentage," "Percentage Change" (Increase/Decrease), "X% of Number," or "Fraction to %".
2. Enter Values: Input your data into the fields. For example, to find a grade, enter the score in the first box and the total possible points in the second.
3. Customize Output: Toggle options to round results to whole numbers or view the calculation steps.
4. Calculate: Click the button to generate the result, decimal equivalent, and fraction instantly.

Frequently Asked Questions

How to use a calculator for percentage?

Select your mode (e.g., "Percentage Change") from the tabs. Enter your values into the fields—such as original and new prices. Click "Calculate" to see the exact percentage and the formula used.

How to quickly calculate percentages?

Use the "X% of Number" tab. Enter the percentage (e.g., 20) and the total value (e.g., 50). The tool instantly computes the result (10), eliminating the need for mental math.

How to calculate someone's percentage?

Use the "Basic Percentage" tab. Enter the score obtained as the "Part" and the total possible score as the "Whole". The calculator divides the part by the whole and multiplies by 100 to generate the grade.

How to calculate percentage between two people?

Use the "Percentage Change" tab. Input the first person's score as the "Original Value" and the second person's score as the "New Value" to see the exact percentage difference between them.

How to calculate the percentage of a group of people?

Input the specific subgroup count (e.g., 15) as the "Part" and the total group size (e.g., 100) as the "Whole" in the "Basic Percentage" tab. The result shows exactly what share of the population that subgroup represents.