Math & Converters
Percentage, scientific and fraction calculators, unit converter, random numbers, number to words and more math tools.
Percentage CalculatorCalculate percentages easily: X% of Y, what percent X is of Y, percentage increase or decrease and marks percentage.
Scientific CalculatorFree online scientific calculator with trigonometry, logarithms, powers, roots, factorials and keyboard support.
Fraction CalculatorAdd, subtract, multiply and divide fractions and mixed numbers, with simplified and decimal results.
Average CalculatorCalculate the mean, median, mode, range, sum and standard deviation of a list of numbers.
Unit ConverterConvert length, weight, temperature, area, volume, speed, time, data, pressure and energy units instantly.
Random Number GeneratorGenerate random numbers in any range, one or many at a time, with or without duplicates.
Number to WordsConvert numbers to words in English for cheques and documents, in international or lakh/crore systems, with currency.
Roman Numeral ConverterConvert numbers to Roman numerals and Roman numerals back to numbers, from 1 to 3,999.
LCM & GCD CalculatorFind the least common multiple (LCM) and greatest common divisor (GCD/HCF) of two or more numbers.
Quadratic Equation SolverSolve quadratic equations ax² + bx + c = 0, including complex roots, with step-by-step working.