Percentage Calculator
Calculate percentages, percentage changes, tips, discounts, and more. Get step-by-step explanations for all calculations.
Percentage Calculator
Choose your calculation type and enter values
Understanding Percentages
Master the fundamentals of percentage calculations
What is a Percentage?
A percentage is a way of expressing a number as a fraction of 100. The word "percent" means "per hundred." For example, 25% means 25 out of 100, or 25/100, or 0.25.
Converting Percentages
To convert a percentage to a decimal, divide by 100. To convert a decimal to a percentage, multiply by 100. For example: 25% = 0.25, and 0.75 = 75%.
Percentage Change
Percentage change shows how much a value has increased or decreased relative to its original value. Formula: ((New Value - Old Value) / |Old Value|) × 100.
Real-World Applications
Percentages are used everywhere: calculating tips, determining discounts, measuring growth rates, analyzing test scores, and comparing statistics. They make complex comparisons simple.
Common Percentage Calculations
Examples of everyday percentage problems
Sales Tax
Calculate 8.5% sales tax on a $200 purchase
Answer: $17.00 tax, $217.00 total
Restaurant Tip
Calculate 18% tip on a $85 dinner bill
Answer: $15.30 tip, $100.30 total
Test Score
What percent is 42 correct out of 50 questions?
Answer: 84% (B grade)
Discount Sale
30% off a $150 jacket during a sale
Answer: $45 discount, $105 final price
Stock Change
Stock price changed from $50 to $65
Answer: 30% increase
Salary Raise
5% raise on a $60,000 annual salary
Answer: $3,000 raise, $63,000 new salary
How to Use the Percentage Calculator
Simple steps to get accurate calculations instantly
Enter Values
Input your values in the calculator form. All fields are clearly labeled for easy understanding.
Calculate
Click the calculate button to get instant, accurate results using advanced mathematical formulas.
Get Results
View detailed results with explanations, charts, and recommendations for better understanding.
Why Choose Our Percentage Calculator?
Advanced features designed for accuracy and ease of use
Multiple percentage calculations
Solve percentage problems instantly
Percentage increase/decrease
Understand percentage concepts
Percentage of total
Save time on calculations
Percentage difference
Accurate mathematical results
Step-by-step solutions
Learn with step-by-step solutions
Visual percentage representation
Enhanced visual percentage representation for better results and user experience.
When to Use the Percentage Calculator
Perfect for various scenarios and applications
Academic homework
Perfect for academic homework with accurate and reliable results that you can trust.
Business calculations
Perfect for business calculations with accurate and reliable results that you can trust.
Financial analysis
Perfect for financial analysis with accurate and reliable results that you can trust.
Statistical analysis
Perfect for statistical analysis with accurate and reliable results that you can trust.
Grade calculations
Perfect for grade calculations with accurate and reliable results that you can trust.
Discount calculations
Perfect for discount calculations with accurate and reliable results that you can trust.
Frequently Asked Questions
Common questions about the Percentage Calculator
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Benefits of Using Our Percentage Calculator
Why millions of users trust our calculator tools
Solve percentage problems instantly
Experience the advantage of solve percentage problems instantly with our advanced calculator.
Understand percentage concepts
Experience the advantage of understand percentage concepts with our advanced calculator.
Save time on calculations
Experience the advantage of save time on calculations with our advanced calculator.
Accurate mathematical results
Enjoy the convenience of accurate mathematical results designed for optimal user experience.
Learn with step-by-step solutions
Enjoy the convenience of learn with step-by-step solutions designed for optimal user experience.
Trusted by Millions Worldwide
Join millions of users who rely on our accurate calculations
Expert Verified Information
Our calculations are reviewed and verified by qualified experts
Prof. Michael Chen
PhD Mathematics, Stanford University
Professor of Applied Mathematics
Prof. Chen has 25+ years of experience in mathematical modeling and statistical analysis. He ensures all calculation formulas are mathematically accurate.
This tool provides accurate results based on industry standards and expert verification. Results are suitable for professional and educational use.