Percentage Calculator
Quickly calculate percentage of a number, find what percent one value is of another, or determine the whole from a known percentage.
How to Use Percentage Calculator
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Choose a percentage formula:
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“What is X% of Y?”
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“A is what % of B?”
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“X is Y% of what?”
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Enter your values in the appropriate input fields.
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Click the “Calculate” button next to your selected formula.
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View the result instantly in the answer box on the right.
Percentage Calculator Key Features
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Handles three common percentage calculations in one tool
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Supports whole-to-part, part-to-whole, and comparative % values
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Provides instant results—no page reloads or delays
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Clean layout with clearly labeled input fields and buttons
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Fully browser-based and mobile-friendly
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No login, ads, or distractions
Why Percentage Calculator Is Best for Everyday Math
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Eliminates manual calculations and formulas
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Ideal for finance, shopping, school, and business
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Saves time on recurring percentage tasks
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Works offline in your browser session
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Accurate results for personal, academic, or professional use
Use Cases of Percentage Calculator
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Find sale price discounts like “What is 25% off $120?”
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Calculate interest amounts such as “What is 8% of $10,000?”
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Determine relative value comparisons like “45 is what % of 90?”
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Work out exam scores, taxes, commissions, and performance ratios
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Convert percentages to actual values or vice versa for invoices or reports
Related Tools
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Discount Calculator – Find exact discount values and final sale prices from original amounts.
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Average Calculator – Combine with percentage data to analyze trends and performance averages.
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Margin Calculator – Calculate profit margins and markups using cost and sale percentages.
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Confidence Interval Calculator – Use with percentage-based confidence levels for data analysis.
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GST Calculator – Calculate GST from percentage rates for inclusive or exclusive tax scenarios.
FAQs
What types of percentage calculations are supported?
This tool supports finding percentage of a value, determining what percent one number is of another, and reverse calculating the whole from a part and percentage.
Is the calculator accurate?
Yes. The tool performs real-time calculations using accurate formulas processed in your browser.
Can I use decimals or large numbers?
Yes. You can enter both decimals and whole numbers—there are no upper limits.
Will it show the result automatically?
Yes. Once you click “Calculate,” the result will appear immediately beside the formula.
Is this calculator free?
Yes. It’s 100% free with no sign-up or usage limits.
Does it work on mobile?
Yes. The interface is responsive and works on phones, tablets, and desktops.
Can I calculate backwards (e.g., find the base from a percentage)?
Yes. Use the third option: “X is Y% of what?” to reverse-calculate totals.
Is any data saved?
No. All calculations are processed locally and cleared once the session ends.
Can this be used for grades or salary calculations?
Absolutely. It’s suitable for academic, financial, or general daily percentage tasks.
Do I need an account?
No. All features are available without registration.
🔒 Security & Privacy Notes
Inputs are processed entirely in your browser—no data leaves your device.
We do not store, log, or share any calculations or values entered.
No uploads are required, and the tool is fully client-side for maximum privacy.
Your session data is cleared when you close or refresh the page.
For more information, view our full Privacy Policy
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