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Percentage Calculator

A versatile percentage calculator that can find what percentage one number is of another, calculate percentage changes, and perform reverse percentage calculations. Useful for discounts, tax calculations, growth rates, and more.

Specialized Calculators

Choose from 8 specialized versions of this calculator, each optimized for specific use cases and calculation methods.

CalculationType

8 calculators
Percentage Change Calculator
Percentage Change Calculator | Calculate Increase & Decrease Rates
Calculate percentage increase or decrease between two values. Perfect for tracking stock prices, growth rates, inflation, and investment returns.
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Find Percentage of Number
Percentage of Number Calculator | Find X% of Y - Tax, Tips & Discounts
Calculate what X percent of a number is. Perfect for finding sales tax, tip amounts, discounts, and portions of any value.
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What Percent Calculator
What Percent is X of Y Calculator | Test Scores, Ratios & Proportions
Calculate what percentage one number is of another. Perfect for test scores, survey results, completion rates, and proportional analysis.
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Reverse Percentage Calculator
Reverse Percentage Calculator | Find Original Number from Percentage
Calculate the original number when you know the percentage and result. Perfect for working backwards from discounts, taxes, and commissions.
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Sales Tax Calculator
Sales Tax Calculator | Calculate Tax Amount & Total Price with Tax
Calculate sales tax amount and total price including tax. Support for all US state tax rates and custom tax percentages.
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Tip Calculator
Tip Calculator | Calculate Restaurant Tips - 15%, 18%, 20% & Custom
Calculate tip amounts for restaurants, delivery, and services. Quick buttons for 15%, 18%, 20% tips plus custom percentages.
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Discount Calculator
Discount Calculator | Calculate Sale Price & Savings Amount
Calculate discount amounts and final sale prices. Perfect for shopping, comparing deals, and finding actual savings on purchases.
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Grade Calculator
Grade Calculator | Calculate Test Scores & Assignment Percentages
Calculate test scores, assignment grades, and academic percentages. Convert points to percentages and determine letter grades.
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Related Calculators

6 calculators

Explore more math calculators

Basic Calculator
Perform basic arithmetic operations: addition, subtraction, multiplication, division, and percentage calculations.
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GPA Calculator
Calculate your semester and cumulative Grade Point Average based on course grades and credit hours
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Test Grade Calculator
Calculate student grades and statistics for various grading methods
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Assignment Grade Calculator
Track assignments by category, calculate your running grade, and see what scores you need to reach your target grade.
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BMI Calculator
Calculate Body Mass Index (BMI) based on height and weight
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Confidence Interval Calculator
Calculate confidence intervals for population means, proportions, and differences
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