Percentage Calculator

Calculate percentages, increases, and decreases easily

What is X% of Y?
Calculate a percentage of a number
X is what percent of Y?
Find what percentage one number is of another
Percentage Increase/Decrease
Calculate the percentage change between two numbers
How to Use

What is X% of Y?

Example: What is 25% of 200? Answer: 50

X is what percent of Y?

Example: 50 is what percent of 200? Answer: 25%

Percentage Increase/Decrease

Example: From 100 to 150 is a 50% increase. From 150 to 100 is a 33.33% decrease.

Free Percentage Calculator - Calculate Percentages Instantly Online

Calculate percentages instantly with our free online percentage calculator. Solve three types of percentage problems: find what percent X is of Y, calculate X% of Y, or determine percentage increase/decrease between two numbers. Perfect for students, shoppers calculating discounts, and anyone needing quick percentage calculations.

Three Ways to Calculate Percentages

1. What is X% of Y? Calculate the result when applying a percentage to a number. Example: What is 20% of 500? Answer: 100. Useful for calculating discounts, tips, tax amounts, and portions.

2. X is what percent of Y? Find what percentage one number represents of another. Example: 75 is what percent of 300? Answer: 25%. Useful for calculating test scores, completion rates, and proportions.

3. Percentage Change: Calculate the percent increase or decrease between two numbers. Example: From 100 to 120 is a 20% increase. Useful for tracking price changes, growth rates, and trends.

Common Use Cases

  • Shopping Discounts: Calculate sale prices and savings (30% off $80 = $24 savings, $56 final price)
  • Test Scores: Convert correct answers to percentages (45 out of 50 = 90%)
  • Tips & Tax: Calculate restaurant tips and sales tax quickly
  • Financial Growth: Track investment returns and percentage gains/losses
  • Academic Grades: Calculate what percentage of points you earned

Features

  • Three Calculators in One: Solves all common percentage problems
  • Instant Results: See answers immediately as you enter numbers
  • Clear Examples: Each calculator includes usage examples
  • 100% Free: No registration or limits on calculations
  • Mobile Friendly: Works perfectly on phones and tablets

FAQ

How do I calculate a discount?

Use "What is X% of Y?" Enter the discount percentage and original price. Subtract the result from the original price to get the sale price.

What's the difference between percentage increase and decrease?

Percentage increase shows growth (new value higher than old). Percentage decrease shows reduction (new value lower than old). The calculator automatically determines which applies.

Can I calculate tips?

Yes! Use "What is X% of Y?" Enter your desired tip percentage (15%, 18%, 20%) and the bill amount to calculate the tip.

Calculate percentages now for shopping, school, and everyday math!

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