Math calculators

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• Finance calculators — mortgage payment and other loan tools (category hub).
• Grade calculators — GPA and related academic estimates (category hub).
• Percentage Change Calculator — percent increase or decrease between two values.
• Fraction To Decimal Calculator — divide numerator by denominator with stable rounding.
• Simple Fraction Calculator — add, subtract, multiply, or divide two fractions with LCD and GCD steps; shareable.
• Mixed Fraction Calculator — same steps engine with whole + proper fraction inputs; shareable.
• Fraction Comparison Calculator — greater than, less than, or equal with steps and a bar picture; simple or mixed mode; shareable.
• Decimal To Fraction Converter — decimals to reduced or unreduced fractions; mixed numbers when |x| > 1.
• Ratio Calculator — check X:Y = A:B with true or false from cross products.
• Average Calculator — Mean, Median, Mode, and Range from pasted number lists.
• Percentage Calculator — 3-in-1 percent formulas for common percentage questions.