Scientific Tools
Free scientific and maths tools from ConversionsHome — a full scientific calculator plus exponents, roots, logarithms, fractions and ratios. Instant answers, no sign-up.
Scientific CalculatorFree scientific calculator: sin, cos, tan in degrees, ln, log10, square root, powers of e and more. Instant answers.
Scientific Notation ConverterFree scientific notation converter: switch between standard form and ordinary numbers.
Exponent CalculatorFree exponent calculator: raise any base to any power, including negative and fractional exponents.
Square Root CalculatorFree square root calculator: find the square root of any non-negative number, with perfect-square reference table.
Logarithm CalculatorFree logarithm calculator: log of any base, plus ln and log10. Instant answers with change-of-base explained.
Factorial CalculatorFree factorial calculator: compute n! for any whole number instantly, with a factorial table and examples.
Fraction CalculatorFree fraction calculator: add, subtract, multiply and divide fractions with automatic simplification. Shows decimals.
Ratio CalculatorFree ratio calculator: solve proportions A:B = C:X instantly. Find the missing value in any ratio.