Math Calculators
Percentages, fractions, and everyday math.
Percentage Calculator
Calculate X% of a number, or what percent X is of Y.
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Fraction Calculator
Add two fractions and reduce the result.
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Percentage Change Calculator
Find the percentage increase or decrease between two values.
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Rule of Three Calculator
Solve direct or inverse proportion problems: if A is to B, what is C to X?
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Area and Volume Calculator
Compute area or volume of common shapes: square, circle, cube, and cylinder.
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