Math Calculators

Free online math calculators with step-by-step solutions. Calculate percentages, generate random numbers, and solve common math problems instantly.

Percentage Calculator

Calculate percentages instantly. Find what percent of a number is, percentage increase/decrease, and more.

Add, subtract, multiply, and divide fractions. Get results as simplified fractions, mixed numbers, and decimals.

Find equivalent fractions for any proper, improper, or mixed fraction. Shows the first 100 equivalent fractions.

Calculate mean, median, mode, range, and standard deviation. Complete statistics for any data set.

Simplify ratios, solve proportions, and scale ratios. Convert between ratios, decimals, and percentages.

Calculate powers, roots, exponentials, and logarithms. Solve xⁿ, ⁿ√x, eˣ, and log expressions.

Calculate square roots, cube roots, and nth roots. Simplify radicals and identify perfect squares.

Solve quadratic equations using the quadratic formula. Find real and complex roots, discriminant, vertex, and step-by-step solution.

Full scientific calculator with trigonometry, logarithms, exponents, and memory functions.

Calculate the Least Common Multiple of two or more numbers. Shows prime factorization and GCD.

Long division with step-by-step work shown. Get quotient, remainder, decimal, and mixed fraction.

Convert between Roman numerals and Arabic numbers. Includes date converter with separator support.

Calculate mean, median, mode, range, and geometric mean. Includes column chart and sorted data display.

Calculate density, mass, or volume using ρ = m/V. Supports multiple units with common material reference.

Calculate molality, solute mass, solvent mass, or molar mass. Solve b = n/W with unit conversions and common solute reference.

Calculate mass from density and volume (m = ρ × V). Supports multiple units with conversions and material presets.

Perform matrix operations: addition, subtraction, multiplication, transpose, determinant, inverse, power, and scalar multiply.

Hex arithmetic and conversions between hexadecimal, decimal, binary, and octal.

Calculate slope, angle, distance, and line equation from two points or a point and slope. Includes visual graph.

Calculate volumes of 11 common 3D shapes with unit conversions between cubic feet, meters, liters, and gallons.

Calculate permutations (nPr) and combinations (nCr) with factorial breakdown. Supports large numbers up to n=170.

Convert circumference to diameter, radius, and area. Enter any circle measurement and get all others instantly.