Math Calculators
The three math problems people look up most are simplifying a fraction, working out a percentage, and solving a quadratic — so those tools are the ones we built to show their full working, not just an answer. Every calculator here returns the steps: the common denominator it used, the discriminant it evaluated, the formula it substituted into. That is the difference between checking homework and actually understanding it.
The 22 tools cover four everyday needs. Fractions — add, subtract, multiply and simplify, or find equivalent fractions. Percentages and ratios for discounts, tips, grades and scaling. Algebra — the quadratic formula, exponents, square roots and slope. And statistics — mean, median, mode, range and standard deviation from a list of numbers you paste in.
A percentage is just a fraction of 100, which is why the same skill unlocks tips, interest and test scores; a quadratic always has the same three roots-or-none structure no matter how messy the coefficients look. Pick a tool below — popular ones first, then the full alphabetical list.
Most popular
8 tools Fraction Calculator — Step-by-Step Solver Add, subtract, multiply, divide, compare, and solve fractions with full step-by-step work. Chain up to 9 fractions, mixed numbers, simplify, and decimal conversions. Percentage Calculator — 7 Modes, Step-by-Step Work Calculate percentages 7 ways: find percent, find whole, percent change, percent difference, add/subtract percent, and reverse percent. Average Calculator — Mean, Median, Mode, Range, SD Calculate mean (sum divided by count), median, mode, range, and standard deviation with step-by-step work. Includes weighted average mode and a full statistics measures reference. Equivalent Fractions Calculator — First 100 Results Find equivalent fractions for any proper, improper, or mixed fraction. Shows the first 100 equivalent fractions instantly.
Quadratic Formula Calculator — Roots, Discriminant Solve quadratic equations using the quadratic formula. Find real and complex roots, discriminant, vertex, and full step-by-step solution. Scientific Calculator — Trig, Log, Exponents, Memory Full scientific calculator with trigonometry, logarithms, exponents, parentheses, and memory functions. Works on mobile and desktop. Square Root Calculator — Simplify Radicals + Steps Calculate square roots, cube roots, and nth roots. Simplify radicals with prime factorization steps and the Babylonian method walkthrough. Circumference to Diameter — All Circle Values Convert circumference to diameter, radius, and area. Enter any circle measurement and get all others instantly.
All math calculators
22 tools Percentage Calculator — 7 Modes, Step-by-Step Work Calculate percentages 7 ways: find percent, find whole, percent change, percent difference, add/subtract percent, and reverse percent. Fraction Calculator — Step-by-Step Solver Add, subtract, multiply, divide, compare, and solve fractions with full step-by-step work. Chain up to 9 fractions, mixed numbers, simplify, and decimal conversions. Equivalent Fractions Calculator — First 100 Results Find equivalent fractions for any proper, improper, or mixed fraction. Shows the first 100 equivalent fractions instantly. Average Calculator — Mean, Median, Mode, Range, SD Calculate mean (sum divided by count), median, mode, range, and standard deviation with step-by-step work. Includes weighted average mode and a full statistics measures reference. Ratio Calculator — Simplify, Solve, Scale, Compare Simplify ratios, solve proportions, scale, split, compare, and generate equivalent ratio tables — all in one tool. Exponent Calculator — Powers, Roots, Logs, e^x Calculate powers, roots, exponentials, and logarithms. Solve xⁿ, ⁿ√x, eˣ, and log expressions with full work shown. Square Root Calculator — Simplify Radicals + Steps Calculate square roots, cube roots, and nth roots. Simplify radicals with prime factorization steps and the Babylonian method walkthrough. Quadratic Formula Calculator — Roots, Discriminant Solve quadratic equations using the quadratic formula. Find real and complex roots, discriminant, vertex, and full step-by-step solution. Scientific Calculator — Trig, Log, Exponents, Memory Full scientific calculator with trigonometry, logarithms, exponents, parentheses, and memory functions. Works on mobile and desktop. LCM Calculator — Least Common Multiple + Prime Steps Find the Least Common Multiple of two or more numbers. Shows prime factorization, GCD, and full step-by-step work. Long Division Calculator — Show Work Step-by-Step Long division with full step-by-step work shown. Get quotient, remainder, decimal, and mixed fraction results.
Roman Numeral Converter — Numbers, Dates Both Ways Convert between Roman numerals and Arabic numbers. Includes a date converter with separator support for full date strings. Mean, Median, Mode, Range Calculator — With Chart Calculate mean, median, mode, range, and geometric mean. Includes column chart visualization and sorted data display. Density Calculator — ρ = m/V, All Units, Materials Calculate density, mass, or volume using ρ = m/V. Supports multiple units with common material reference values. Molality Calculator — b = n/W, Solve Any Variable Calculate molality, solute mass, solvent mass, or molar mass. Solve b = n/W with unit conversions and a common solute reference. Mass Calculator — m = ρ × V, Density to Mass Calculate mass from density and volume (m = ρ × V). Supports multiple units with conversions and material presets. Matrix Calculator — Multiply, Inverse, Determinant Perform matrix operations: addition, subtraction, multiplication, transpose, determinant, inverse, power, and scalar multiply. Hex Calculator — Add, Subtract, Convert Hex/Dec/Bin Hex arithmetic and conversions between hexadecimal, decimal, binary, and octal. Includes bitwise operations. Slope Calculator — Steps, Graph & Line Equation Calculate slope m = (y2 − y1) / (x2 − x1) with the full step-by-step solution, visual graph, angle, distance, and line equation — from two points or a point and slope. Volume Calculator — 11 Shapes, ft³, m³, L, Gallons Calculate volumes of 11 common 3D shapes with unit conversions between cubic feet, cubic meters, liters, and gallons. Permutation & Combination Calculator — nPr, nCr Calculate permutations (nPr) and combinations (nCr) with factorial breakdown. Supports large numbers up to n=170. Circumference to Diameter — All Circle Values Convert circumference to diameter, radius, and area. Enter any circle measurement and get all others instantly.