Arithmetic Calculators

Calculate basic math, big number and decimal to fraction and other arithmetic calculations.

Popular:Basic Math CalculatorBig Number CalculatorDecimal to Fraction CalculatorExponent CalculatorFraction CalculatorFraction Simplifier

All Arithmetic Calculators

Basic Math CalculatorAdd, subtract, multiply, or divide two numbers.Big Number CalculatorAdd, subtract, multiply, or divide two very large whole numbers exactly, beyond normal floating-point precision.Decimal to Fraction CalculatorConvert a decimal number to a fraction in lowest terms.Exponent CalculatorCalculate base raised to an exponent (base^exponent), including negative and fractional exponents.Fraction CalculatorAdd, subtract, multiply, or divide two fractions, with the result simplified to lowest terms.Fraction SimplifierSimplify a fraction to its lowest terms.Fraction to Decimal CalculatorConvert a fraction to its decimal equivalent.Logarithm CalculatorCalculate the logarithm of a number for any base.Mixed Number CalculatorAdd, subtract, multiply, or divide two mixed numbers (like 1 1/2).Natural Log CalculatorCalculate the natural logarithm (ln) of a number, base e.Power CalculatorCalculate a number raised to a power (base^exponent).Proportion CalculatorSolve a proportion (A:B = C:D) for the missing fourth value.Ratio CalculatorSimplify a ratio (like 8:12) to its lowest terms.Root CalculatorCalculate any root of a number — square root, cube root, or any higher-degree root.

Arithmetic Guides

Mathematics1 min read

Converting Between Fractions and Decimals

Converting a fraction to a decimal is division — numerator ÷ denominator — while converting a decimal to a fraction reads off its place value and then simplifies; the tricky part is a repeating decimal, which can only ever be typed to a finite number of digits.

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Mathematics1 min read

How a Proportion Is Solved for the Missing Value

Solving a proportion A:B = C:D for the unknown D comes down to cross-multiplication — a single rearrangement that turns a proportional relationship into a simple multiply-and-divide calculation.

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Mathematics1 min read

How a Ratio Is Simplified to Lowest Terms

Simplifying a ratio means dividing both numbers by their greatest common factor — the same GCF concept used for simplifying fractions, just applied to two numbers written with a colon between them.

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Mathematics1 min read

How Exponentiation Is Calculated

Exponentiation multiplies a base by itself the number of times given by the exponent — and a negative exponent means taking the reciprocal of that positive-exponent result instead.

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Mathematics1 min read

How Exponents, Roots, and Logarithms Are Inverse Operations

Exponentiation, roots, and logarithms all describe the same relationship between three numbers — a base, an exponent, and a result — each one solving for whichever piece the other two leave unknown.

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Other Mathematics Subcategories

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