Percentage Calculator

Calculate percentages, percentage increases/decreases, and compare values instantly. Free online percentage calculator with multiple calculation types and detailed results.

Percentage Calculator

Calculate percentages, increases, decreases, and comparisons with detailed explanations

Select Calculation Type:

Percentage (%):

Of Number:

Example: 25% of 200 = ?

Initial Value:

Final Value:

Example: From 100 to 120 = 20% increase

Part Value:

Whole Value:

Example: 50 is what % of 200?

Result Value:

Percentage (%):

Example: 150 is 75% of what number?

First Number:

Second Number:

Example: Compare 80 and 100

Enter values above to see the calculation result

Common Use Cases

Calculate discounts and sale prices
Determine tax amounts and tips
Analyze business growth rates
Compare test scores and grades

Master Percentage Calculations

Percentages are fundamental in mathematics, finance, business, and everyday life. Our comprehensive percentage calculator handles all common percentage calculations with detailed explanations and real-time results.

Calculation Types Explained

What is X% of Y? Find a percentage of a number (e.g., 25% of 200 = 50)
Percentage Increase/Decrease: Calculate the percentage change between two values
What percentage is X of Y? Find what percentage one number is of another
Find Original Value: Reverse calculate to find the original number
Compare Two Numbers: Calculate percentage difference and relative comparisons

Real-World Applications

Shopping & Finance: Calculate discounts, tax, tips, and interest rates
Business Analysis: Measure growth rates, profit margins, and performance metrics
Education: Grade calculations, test score analysis, and academic progress
Health & Fitness: Body fat percentage, workout progress, and nutrition tracking
Statistics: Data analysis, survey results, and research findings

Percentage Formulas

Basic Percentage: (Part ÷ Whole) × 100 = Percentage
Percentage of Number: (Percentage ÷ 100) × Number = Result
Percentage Change: ((New Value - Old Value) ÷ Old Value) × 100
Percentage Difference: (|Value1 - Value2| ÷ Average) × 100

Tips for Accurate Calculations

Double-check your input values for accuracy
Understand the difference between percentage change and percentage difference
Use the breakdown feature to verify your calculations
Round results appropriately for your specific use case

Pro Tip

Use the real-time calculation feature to see results as you type. The breakdown section shows the formula and steps used, helping you understand the calculation process.

Percentage Calculator