Percentage Calculator

Quickly calculate percentages with the Percentage Calculator from Math Tools. Solve percent increases, decreases, and more in seconds. Start simplifying math today!

Enter your values

Original value

Enter a valid non-negative value.

The starting number.

Percent

Enter a valid non-negative percentage.

Increase or decrease by this percent.

Increase Decrease

Results

Computed result

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Ready

Enter values and click Calculate to see results here.

Summary of inputs and outputs.
Label	Value
No data yet.

Visual

The chart illustrates the percentage relevant to your calculation.

History

Recent calculations stored locally in your browser.
Time	Type	Inputs	Result
No calculations yet.

Tips

Percent of: P% of N equals (P/100) × N.
What percent: X is what percent of Y equals (X/Y) × 100.
Increase/decrease: Final = N × (1 ± P/100).
Percent change: ((New − Old)/Old) × 100; if Old is 0 and New > 0, change is 100% by definition here.

What is an Online Percentage Calculator?

An Online Percentage Calculator is a digital tool available on websites or apps that helps users quickly calculate percentage-related problems. It can perform tasks like finding percentages, calculating percentage increases or decreases, and determining what percentage one number is of another. These calculators are often used for financial calculations, discounts, or academic purposes.

How to Use an Online Percentage Calculator?

Access the Calculator: Open a web browser and go to an online percentage calculator website or app.
Choose the Type of Calculation: Select the specific operation you want to perform, such as finding a percentage or percentage change.
Enter Values: Input the required numbers in the provided fields (e.g., total amount, percentage rate, or the amount to find the percentage of).
Calculate: Click the Calculate button to see the result.
Adjust and Repeat (if needed): Modify the input values to perform additional calculations.

Frequently Asked Questions-

What types of percentage calculations can an online percentage calculator perform?
It can find percentages, calculate percentage increases or decreases, determine what percentage one number is of another, and reverse percentage calculations (e.g., original value from a discounted amount).
Can I use an online percentage calculator for discounts and taxes?
Yes, you can calculate discounts, sales tax, and tips by entering the price and the percentage rate.
How do I calculate percentage change using an online percentage calculator?
Input the original value and the new value; the calculator will compute the percentage increase or decrease.
Is an online percentage calculator accurate?
Yes, reputable online calculators are highly accurate for standard percentage calculations.
Do I need math skills to use an online percentage calculator?
No, these calculators are user-friendly and require only basic input of numbers, making them accessible to users with minimal math knowledge.