Percentage Calculator

Percentage Calculator – Easy Online Tool for Quick Calculations

What is a Percentage Calculator?

A percentage calculator is a digital tool that helps you compute percentages quickly without manual math. Whether you’re calculating discounts, tax rates, exam scores, or financial growth, this tool simplifies complex percentage-based calculations in seconds.

Why Use a Percentage Calculator?

  • Saves time – No need for manual formulas

  • Reduces errors – Ensures 100% accuracy

  • Versatile applications – Useful for finance, academics, shopping, and business

  • User-friendly – No technical expertise required

How to Use Our Percentage Calculator

Our free online tool offers four key functions:

1. What is X% of Y?

Example:  What is 20% of 500?

  • Enter 20 in the first field

  • Enter 500 in the second field

  • Click Calculate
    ✅ Result: 100

2. X is What Percent of Y?

Example:  50 is what percent of 200?

  • Enter 50 in the first field

  • Enter 200 in the second field

  • Click Calculate
    ✅ Result: 25%

3. Increase X by Y%

Example:  Increase 80 by 15%

  • Enter 80 in the first field

  • Enter 15 in the second field

  • Click Calculate
    ✅ Result: 92

4. Decrease X by Y%

Example:  Decrease 200 by 30%

  • Enter 200 in the first field

  • Enter 30 in the second field

  • Click Calculate
    ✅ Result: 140

Practical Applications of Percentage Calculations

Finance & Business

  • Profit/loss calculations

  • Loan interest rates

  • Stock market changes

Shopping & Discounts

  • Black Friday sales (e.g., 40% off $120)

  • Tax calculations (e.g., 7% sales tax on $50)

Academics & Statistics

  • Exam score percentages (e.g., 85 out of 100 = 85%)

  • Data analysis (e.g., survey results)

Percentage Calculator

Percentage Formulas (Manual Calculation Method)

For those who prefer doing math manually:

1. Basic Percentage Formula

Percentage=(PartWhole)×100

2. Percentage Increase Formula

New Value=Original×(1+Percentage100)

3. Percentage Decrease Formula

New Value=Original×(1−Percentage100)

Frequently Asked Questions (FAQs)

1. How do I calculate 10% of a number?

Divide the number by 10 (e.g., 10% of 300 = 30).

2. What is 20% off $50?

20% of $50 = $10 → Final price = $40.

3. How do I add 15% to a price?

Multiply the price by 1.15 (e.g., $100 + 15% = $115).

4. What’s the difference between percentage and percentile?

  • Percentage = Relative value out of 100

  • Percentile = Ranking in a distribution (e.g., 90th percentile means you scored higher than 90% of people)

Leave a Comment