Percentage Calculator
Please provide any two values below and click the "Calculate" button to get the third value.
Result: 10
10% of 100 = 10
Steps:
10% of 100 = 0.1 × 100 = 10
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Percentage Calculator in Common Phrases
what is of
is what % of
is of what
Free Online Percentage Calculator Tool
This advanced percentage calculator solves all types of percent problems instantly. Calculate percentage increases, find percent differences, determine discounts, and solve common percentage math problems with our easy-to-use online tool.
How to Calculate Percentages
Our free percentage calculator helps you solve three main types of percentage problems:
1. What is X% of Y? (Percentage of a Number)
Formula: (X / 100) × Y
Practical uses: Calculating tips (15% of a bill), sales tax (7% of purchase price), or discounts (30% off).
2. X is What Percent of Y?
Formula: (X / Y) × 100
Practical uses: Determining test scores (45 correct out of 50 = 90%), profit margins, or battery percentage.
3. Percentage Increase/Decrease
Formula: ((New Value - Old Value) / Old Value) × 100
Practical uses: Tracking stock price changes, salary increases, or population growth rates.
Percentage Formulas Explained
The basic percentage formula is: (Part/Whole) × 100 = Percentage
For percentage change: ((New-Original)/Original) × 100
Percentage Calculator FAQs
How do I calculate percentage increase?
Use our percentage change calculator by entering the original value and the increased value to find the percent growth.
What’s the difference between percentage and percent?
“Percent” means per hundred (%), while “percentage” is the result of a percent calculation. Our percentage calculator online handles both concepts.