Calculate percentages instantly with our free online tool. Works with percentage of a number, percentage increase/decrease, reverse percentage calculations, markup/discount percentages, and more. No buttons needed - results update automatically as you type!
Calculation Result
NaN% of NaN = NaN
Key Features:
7 Calculation Modes - All percentage formulas in one tool
Instant Results - No calculate button needed
Mobile-Friendly - Works perfectly on all devices
Percentage Increase/Decrease - Calculate growth or reduction
Reverse Calculations - Find original values before percentage changes
Markup/Discount Tool - Perfect for pricing and shopping
Financial Calculations - Interest rates and more
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Percentage Calculator Features
Free online percentage tool for students, teachers, shoppers, and financial calculations. Calculate percentage of numbers, percentage difference, reverse percentages, add or subtract percentages instantly.