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X is What Percent of Y Calculator

A free online calculator to find what percentage one number is of another. Used by students calculating test scores, businesses measuring conversion rates, and anyone comparing two numbers as a percentage.

X is What Percent of Y?

Find what percentage one number is of another.

is what % of
?

For example, to find what percentage 25 is of 200, enter 25 in the first box and 200 in the second box. The answer is 12.5%.

Result =
Enter values to see result

To find what percentage X is of Y, divide X by Y and multiply by 100:

Formula: Percentage = (X / Y) × 100

  • 25 is what % of 100?: (25 / 100) × 100 = 25%
  • 50 is what % of 200?: (50 / 200) × 100 = 25%
  • 75 is what % of 150?: (75 / 150) × 100 = 50%
  • 30 is what % of 120?: (30 / 120) × 100 = 25%
  • Calculate test scores (e.g., 45 out of 50 = 90%)
  • Find grade percentages
  • Determine assignment scores
  • Calculate conversion rates
  • Find success rates
  • Determine market share
  • Calculate proportions
  • Find ratios as percentages
  • Determine relative frequencies
  • Compare prices
  • Calculate completion rates
  • Find progress percentages
XYPercentage
1425%
1520%
11010%
1250%
3475%
  1. Test Scores: If you got 42 out of 50 questions correct, enter 42 as X and 50 as Y
  2. Sales Performance: If you sold 15 out of 60 items, enter 15 as X and 60 as Y
  3. Completion Rate: If you completed 23 out of 30 tasks, enter 23 as X and 30 as Y

How do I calculate what percent X is of Y?

Section titled “How do I calculate what percent X is of Y?”

Divide X by Y, then multiply by 100. For example, to find what percent 25 is of 100: (25 ÷ 100) × 100 = 25%.

30 out of 50 is 60%. Calculate this as (30 ÷ 50) × 100 = 60%.

How do I calculate my test score percentage?

Section titled “How do I calculate my test score percentage?”

Enter your correct answers as X and total questions as Y. For example, 42 correct out of 50 total: (42 ÷ 50) × 100 = 84%.

Can this calculator handle decimal numbers?

Section titled “Can this calculator handle decimal numbers?”

Yes, you can enter decimal values for both X and Y. The calculator provides accurate results up to 5 decimal places.

The calculator will return a percentage over 100%. For example, 150 is 300% of 50.