Math and Numbers

Calculate percentages, fractions, roots, logarithms, prime numbers, and convert between number bases and formats.

18 tools

Percentage Calculator

Calculate percentages, percentage change, difference, increase, and decrease instantly.

Math and Numbers

Fraction Calculator

Add, subtract, multiply, divide, and simplify fractions with step-by-step solutions.

Math and Numbers

Fraction to Decimal Converter

Convert any fraction to its decimal equivalent with repeating decimal detection.

Math and Numbers

Decimal to Fraction Converter

Convert any decimal number to a simplified fraction with step-by-step conversion.

Math and Numbers

Scientific Notation Converter

Convert between standard numbers and scientific notation with E-notation support.

Math and Numbers

Random Number Generator

Generate random numbers within a range with options for count, uniqueness, and sorting.

Math and Numbers

Prime Number Checker and Generator

Check if a number is prime and generate lists of prime numbers in any range.

Math and Numbers

GCD and LCM Calculator

Find the greatest common divisor and least common multiple of two or more numbers.

Math and Numbers

Exponent and Power Calculator

Calculate powers, exponents, and exponential expressions with support for any base and exponent.

Math and Numbers

Logarithm Calculator

Calculate logarithms with any base including natural log (ln), log base 10, and log base 2.

Math and Numbers

Square Root and Nth Root Calculator

Calculate square roots, cube roots, and any nth root of a number with precision.

Math and Numbers

Modulo Calculator

Calculate the remainder of division (modulo operation) for any two numbers.

Math and Numbers

Number Base Converter

Convert numbers between binary, octal, decimal, hexadecimal, and any custom base.

Math and Numbers

Roman Numeral Converter

Convert between Roman numerals and Arabic (decimal) numbers in both directions.

Math and Numbers

Math Expression Evaluator

Evaluate arbitrary math expressions with variables, functions, and operator precedence. Multi-line support.

Math and Numbers

Triangle Calculator

Solve any triangle from 3 known values. Compute all sides, angles, area, perimeter, and draw diagrams.

Math and Numbers

Quadratic Equation Solver

Solve ax^2 + bx + c = 0. Shows discriminant, real or complex roots, vertex, and parabola graph.

Math and Numbers

Pythagorean Theorem Calculator

Find the missing side of a right triangle or verify if three sides form a right triangle.

Math and Numbers

Explore Other Categories

Unit ConvertersConvert between units of length, weight, temperature, speed, volume, area, data, time, pressure, energy, fuel efficiency, and angles.
Statistics and DataCalculate standard deviation, mean, median, mode, probability, combinations, normal distribution, and sample sizes.
Finance and BusinessCalculate interest, loans, mortgages, tips, ROI, profit margins, discounts, and convert salaries.
Electrical and EngineeringCalculate Ohm's law, resistor color codes, power consumption, voltage dividers, and LED resistors.