Algebra Calculator
Instantly solve linear and quadratic equations, inequalities, systems, polynomials, and algebraic fractions step-by-step with clear working and rules.
Math Calculators
52 calculators
Related categories
Algebra(19 calculators)
Complex Number Calculator
Instantly add, subtract, multiply, divide, and convert complex numbers between rectangular ($a + bi / a + bj$) and polar ($r \angle \theta$) forms with step-by-step solutions.
Equation Solver
Solve linear, quadratic, polynomial, radical, and absolute value equations step-by-step, check extraneous solutions, and find roots instantly with this free online Equation Solver.
Factoring Calculator
Break down any polynomial, trinomial, or number into its simplest factors step-by-step with this free online Factoring Calculator.
Graphing Calculator
Instantly plot functions, inequalities, parametric & polar equations step-by-step with interactive trace, table of values, and window adjustments.
Inequality Calculator
Solve linear, compound, quadratic, rational, and absolute value inequalities step-by-step, get interval notation, and number line graphs with this free online Inequality Calculator.
Arithmetic & Basic Math(8 calculators)
Decimal to Fraction Calculator
Instantly convert terminating and repeating decimals into fully simplified fractions or mixed numbers step-by-step with this free online calculator.
Fraction Calculator
Instantly add, subtract, multiply, divide, simplify, and convert proper/improper fractions and mixed numbers step-by-step with this free Fraction Calculator.
GCF / HCF Calculator
Instantly calculate the Greatest Common Factor (GCF/HCF/GCD) for two or more numbers step-by-step using listing factors, prime factorization, or the Euclidean algorithm.
LCM Calculator
Instantly calculate the Least Common Multiple (LCM) for two or more whole numbers or fractions step-by-step using prime factorization, listing multiples, or ladder division methods.
Percentage Calculator
A free online Percentage Calculator that quickly solves percentage problems, calculates percentage increase and decrease, percentage difference, and percentage error with step-by-step formulas and practical examples.
Proportion Calculator
Easily find missing values in equal ratios with this free Proportion Calculator, designed to cross-multiply automatically and deliver step-by-step math solutions.
Calculus(6 calculators)
Definite Integral Calculator
Instantly evaluate bounded integrals step-by-step, calculate exact net signed areas, and transform integration limits using this free Definite Integral Calculator.
Derivative Calculator
Instantly calculate first-order, higher-order, and partial derivatives step-by-step using power, product, quotient, and chain rules with interactive graphs.
Integral Calculator
Instantly calculate definite and indefinite integrals (antiderivatives) step-by-step with interactive graphs, rule breakdowns, and verification checks.
Limit Calculator
Instantly calculate one-sided and two-sided limits step-by-step using direct substitution, factoring, rationalizing, L'Hopital's rule, and Taylor series.
Partial Derivative Calculator
Instantly calculate first-order, second-order, mixed, and implicit partial derivatives for multivariable functions step-by-step with this free online calculator.
Taylor Series Calculator
Instantly calculate Taylor and Maclaurin series expansions step-by-step around any center point $a$ with exact polynomial degrees, derivatives, and Lagrange error bounds.
General(1 calculator)
System of Inequalities Calculator
Instantly solve systems of linear and non-linear inequalities step-by-step with interactive overlapping shaded regions, solid/dashed boundary lines, and 2D/3D graphs.
Geometry(10 calculators)
Area Calculator
Calculate the exact area of squares, circles, triangles, land plots, and irregular L-shaped rooms in any unit with this free, instant Area Calculator.
Circle Calculator
Instantly calculate circle radius, diameter, circumference, and area from any single known value with exact formulas and unit conversions using this free Circle Calculator.
Circumference Calculator
A free circumference calculator that solves for a circle's circumference, radius, diameter, or area from whichever one measurement you already have, complete with step-by-step formulas.
Perimeter Calculator
Calculate the perimeter of squares, rectangles, triangles, circles, polygons, and irregular shapes instantly with step-by-step formulas using this free online Perimeter Calculator.
Pythagorean Theorem Calculator
A free calculator that finds the missing side, hypotenuse or leg, of a right triangle using the Pythagorean theorem, with the formula and steps shown.
Rectangle Calculator
A free online rectangle calculator that finds area, perimeter, and diagonal from length and width, or solves backward when only two values are known.
Statistics & Probability(8 calculators)
Average Calculator
Calculate the mean, median, sum, count, minimum, maximum, and range of any set of numbers instantly with this free, automatic Average Calculator.
GPA Calculator
Instantly calculate semester and cumulative GPAs across 4.0 unweighted, weighted (AP/Honors/IB), and percentage scales with credit-hour weighting.
Grade Calculator
Instantly calculate weighted course grades, category averages, and required final exam scores step-by-step with percentage and points-based grading scales.
Mean Median Mode Calculator
Instantly calculate the mean, median, mode, sum, and total count for any data set or frequency table step-by-step with this free online calculator.
Probability Calculator
Instantly calculate single, multiple (AND/OR), dependent, and repeated event probabilities as decimals, fractions, and percentages with this free online Probability Calculator.
Standard Deviation Calculator
Instantly calculate sample and population standard deviation, variance, mean, and z-scores step-by-step using this free online Standard Deviation Calculator.
About Math
A math calculator is a tool that solves numeric or symbolic problems by applying a defined mathematical formula or operation to user-entered values. It removes manual calculation steps and returns an accurate result instantly, whether the problem involves algebra, geometry, or general arithmetic. The Math Calculator hub organizes tools into 3 main categories: Algebra Calculators, General Calculators, and Geometry Calculators.
What Does a Math Calculator Do?
A math calculator takes numeric or variable input, applies a specific mathematical rule or formula, and returns a solved result. The user enters known values, and the calculator processes them using the correct operation for that problem type. No manual formula lookup or step-by-step working is required from the user.
How Does a Math Calculator Work?
A math calculator works by mapping the input values to a predefined formula, then computing the output based on that formula's logic.
What Is a Mathematical Formula?
A mathematical formula is a fixed relationship between known and unknown values expressed using numbers, variables, and operators. For example, the area of a rectangle is defined by the formula Area = Length × Width. Formulas stay constant regardless of which numbers are entered.
What Determines Which Formula a Calculator Uses?
The formula a calculator uses is determined by the type of mathematical problem being solved. An algebra problem uses equation-solving formulas, a geometry problem uses shape-based formulas, and a general arithmetic problem uses direct numeric operations.
What Are the Main Categories of Math Calculators?
There are 3 main categories of math calculators: Algebra Calculators, General Calculators, and Geometry Calculators. Each category groups tools that solve a specific type of mathematical problem.
Algebra Calculators solve equations and expressions involving variables, such as linear equations, quadratic equations, and inequalities.
General Calculators perform everyday numeric operations such as percentages, averages, ratios, and basic arithmetic.
Geometry Calculators solve problems involving shapes and spatial measurements, such as area, perimeter, volume, and angles.