Percentage Calculators & Tools

Free online percentage calculators with step-by-step solutions. Calculate percentages, find percentage change, and convert between fractions and percentages.

Percentage Tools

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Percentage Calculator

Calculate what is X% of Y, X is what percent of Y, and percentage change between two numbers.

Common Percentage Calculations

What is 10% of 200What is 20% of 150What is 15% of 8025 is what % of 20050 is what % of 300What is 30% of 90

Fraction to Percentage

Click any fraction to see the percentage equivalent with step-by-step solution.

1/2
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1/4
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3/4
as percentage
1/5
as percentage
2/5
as percentage
1/10
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3/10
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1/8
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3/8
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5/8
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7/8
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1/3
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Frequently Asked Questions

How do you calculate a percentage?

To calculate a percentage, divide the part by the whole and multiply by 100. For example, if you scored 45 out of 50 on a test: (45 / 50) × 100 = 90%.

How do you calculate percentage increase?

To calculate percentage increase, subtract the original value from the new value, divide by the original value, and multiply by 100. Formula: ((New - Original) / Original) × 100.

How do you find what percent one number is of another?

Divide the first number by the second number and multiply by 100. For example, to find what percent 25 is of 200: (25 / 200) × 100 = 12.5%.

What is the difference between percentage and percentile?

A percentage represents a fraction of 100 (e.g., 75% means 75 out of 100). A percentile indicates a position in a ranked list (e.g., 90th percentile means scoring higher than 90% of the group).