Percentage Calculator
What is a Percentage?
A percentage is a number or ratio expressed as a fraction of 100. The word percentage comes from the Latin "per centum" meaning "by the hundred." For example, 45% (45 percent) means 45/100, or 45 parts per hundred.
Common Uses of Percentages
- Shopping discounts and sales (20% off)
- Academic grades (95% on a test)
- Statistics (75% of people)
- Financial calculations (6% interest rate)
- Progress indicators (60% complete)
- Restaurant tips (15% gratuity)
- Tax rates (8.5% sales tax)
Why Use Percentages?
- Make comparisons easier across different scales
- Standardize measurements for better understanding
- Show proportional relationships clearly
- Simplify complex numerical relationships
What is Percentage Calculator?
A percentage calculator is a digital tool that helps you perform various percentage-based calculations quickly and accurately. It eliminates the need for manual calculations and reduces human error in computing percentages, discounts, increases, and other percentage-related problems.
How to Use the Percentage Calculator
Basic Percentage Calculations
X is What Percent of Y Calculator (Find a percentage of a number):
- Enter the percentage in the first box
- Enter the number in the second box
- Click "Calculate" to see the result
- Example: To find 20% of 50, enter 20 and 50
What is X Percent of Y Calculator (Find what percentage one number is of another):
- Enter the first number (the part)
- Enter the second number (the whole)
- Click "Calculate" to see what percentage the first number is of the second
- Example: To find what percentage 20 is of 50, enter 20 and 50
X is Y Percent of What Calculator (Find the total when you know a percentage):
- Enter the known number
- Enter the percentage it represents
- Click "Calculate" to find the total
- Example: If 20 is 40% of a number, enter 20 and 40
More percentage calculators
- Percent Error Calculator: Calculates the difference between measured and actual values.
- Percent Change Calculator: Computes the change between old and new values as a percentage.
- Percent Increase Calculator: Determines the percentage increase from an initial value to a final value.
- Percent Difference Calculator: Measures the relative difference between two values as a percentage.
- Percent Yield Calculator: Calculates the ratio of actual yield to theoretical yield in chemical reactions.
- Percent Off Calculator: Computes final prices after applying percentage discounts.
- Percent Decrease Calculator: Determines the percentage decrease from an initial value to a final value.
- How to Find the Percent of a Number: Explains basic percentage calculation methods and formulas.
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