Math

154 tools · Algebra, calculus, geometry, statistics, and scientific calculators.

Open Scientific Lab Open Graph Lab

All Calculators Calculus Algebra Geometry Statistics & Probability

Scientific Calculator

Evaluate scientific expressions in your browser.

Convert physics units: force, energy, pressure, temperature, electrical, and more.

Physical Constants

Searchable database of physical and chemical constants.

Chemistry Converter

Molarity, molality, moles↔mass, dilution, and ppm/ppb.

Basic Calculator

A simple calculator for everyday arithmetic.

Square Root Calculator

Calculate square roots.

Exponent Calculator

Calculate exponents and powers.

Calculate logarithms.

Find the greatest common divisor.

Find the least common multiple.

Prime Number Checker

Check whether a number is prime.

Factorial Calculator

Calculate factorials.

Fraction Calculator

Add, subtract, multiply, and divide fractions.

Graphing Calculator

Plot functions on a 2D graph.

Matrix Calculator

Add, multiply, invert, transpose, factor, and more matrix operations.

Matrix Transpose Calculator

Transpose a matrix (swap rows and columns).

Matrix Rank Calculator

Compute the rank of a matrix via row reduction.

Eigenvalues and Eigenvectors Calculator

Find eigenvalues and eigenvectors of a square matrix.

LU Decomposition Calculator

Factor a matrix into PA = LU with partial pivoting.

QR Decomposition Calculator

Factor a matrix into Q R (orthogonal × upper-triangular).

Singular value decomposition A = U Σ Vᵀ.

Null Space Calculator

Find a basis for the null space of a matrix.

Matrix Power Calculator

Raise a square matrix to an integer power.

Matrix Trace Calculator

Sum the diagonal entries of a square matrix.

Matrix Adjugate Calculator

Compute the adjugate (classical adjoint) of a square matrix.

Matrix Least Squares Calculator

Solve rectangular least-squares problems min ‖Ax − b‖.

Complex Matrix Calculator

Matrix arithmetic with complex entries (a+bi).

Vector Calculator

Dot product, cross product, magnitude, and unit vectors.

Complex Number Calculator

Add, multiply, and convert complex numbers.

Polynomial Calculator

Evaluate and inspect polynomials.

Cubic Equation Solver

Solve cubic equations of the form ax³+bx²+cx+d=0.

Mixed-Number Calculator

Convert and compute with mixed numbers.

Prime Factorization

Factor an integer into primes.

Modular Arithmetic Calculator

Compute modular add, multiply, and powers.

Root Calculator

Calculate nth roots.

Sequence Calculator

Arithmetic and geometric sequence terms and sums.

Percentage Calculator

Percent of, percent change, and what-percent.

Ratio and Proportion Calculator

Solve proportions a/b = c/d.

Scientific Notation Converter

Convert numbers to scientific notation.

Fibonacci Calculator

Compute the nth Fibonacci number and sequence.

Decimal to Fraction Calculator

Convert decimals to approximate fractions.

Fraction to Decimal Calculator

Convert fractions to decimals.

Percent Error Calculator

Compute percent error from experimental and theoretical values.

Average Rate of Change Calculator

Compute [f(b)−f(a)]/(b−a) for a function.

Modular Inverse Calculator

Find a⁻¹ mod m when it exists.

Euler Totient Calculator

Compute Euler's φ(n).

Chinese Remainder Theorem Calculator

Solve systems of congruences.

Perfect Number Checker

Check whether n equals the sum of its proper divisors.

Convert integers between bases 2–36.

Series Sum Calculator

Sum arithmetic or geometric series.

Derivative Calculator

Differentiate an expression with respect to a variable.

Second Derivative Calculator

Compute the second derivative of an expression.

Partial Derivative Calculator

Compute partial derivatives of multivariable functions.

Integral Calculator

Integrate expressions symbolically or numerically.

Definite Integral Calculator

Evaluate definite integrals between two bounds.

Indefinite Integral Calculator

Find antiderivatives of expressions.

Limit Calculator

Evaluate limits of expressions.

Taylor Series Calculator

Expand a function as a Taylor series.

Maclaurin Series Calculator

Expand a function as a Maclaurin series (a=0).

Gradient Calculator

Compute the gradient of a scalar field.

Divergence Calculator

Compute divergence of a vector field.

Curl Calculator

Compute curl of a vector field.

Numerical Integration Calculator

Approximate definite integrals numerically.

Numerical Differentiation Calculator

Approximate derivatives numerically.

Implicit Differentiation Calculator

Find dy/dx from F(x,y)=0.

Related Rates Calculator

Differentiate a relation with respect to time.

Optimization Calculator

Find min/max of f on an interval.

Mean Value Theorem Calculator

Find c where f'(c) equals the secant slope.

Arc Length Calculator

Approximate arc length of y=f(x) on [a,b].

Differential Equation Solver

Solve simple first-order DEs y'=f(x).

Jacobian Calculator

Compute the Jacobian matrix of a vector map.

Hessian Calculator

Compute the Hessian matrix of second derivatives.

Equation Solver

Solve algebraic equations for a variable.

System of Equations Solver

Solve simultaneous linear equations.

Quadratic Equation Solver

Solve ax²+bx+c=0.

Polynomial Solver

Find roots of polynomials.

Factor Polynomial

Factor polynomials into products.

Expand Polynomial

Expand polynomial products and powers.

Simplify Expression

Simplify algebraic expressions.

Rational Expression Simplifier

Simplify rational expressions.

Inequality Solver

Solve algebraic inequalities.

Absolute Value Equations

Solve equations with absolute values.

Log Equations Solver

Solve logarithmic equations.

Exponential Equations Solver

Solve exponential equations.

Matrix Equations Solver

Solve linear matrix equations AX=B.

Linear Equation Solver

Solve ax+b=c for x.

Completing the Square Calculator

Rewrite quadratics in vertex form.

Vertex Form Calculator

Convert ax²+bx+c to a(x−h)²+k.

Domain and Range Calculator

Domain restrictions and numeric range hints for f(x).

Function Composition Calculator

Compute (f∘g)(x).

Inverse Function Calculator

Find inverses of linear functions ax+b.

Partial Fractions Calculator

Simplify / decompose rational expressions.

Synthetic Division Calculator

Divide polynomials by (x−a) using synthetic division.

Remainder Theorem Calculator

Evaluate p(a) as the remainder on division by (x−a).

Cramer's Rule Calculator

Solve linear systems with determinants.

Gram-Schmidt Calculator

Orthonormalize a set of vectors.

Vector Projection Calculator

Project vector a onto vector b.

Triangle Calculator

Compute triangle sides, angles, and area.

Right Triangle Calculator

Solve right triangles from two known values.

Circle Calculator

Compute circle area, circumference, and radius.

Rectangle Calculator

Compute rectangle area and perimeter.

Square Calculator

Compute square area and perimeter.

Polygon Calculator

Regular polygon area and perimeter.

Area Calculator

Compute area for common 2D shapes.

Surface Area Calculator

Compute surface area of common 3D solids.

Volume Calculator

Compute volume of common 3D solids.

Distance Between Points

Distance between two points in 2D or 3D.

Midpoint Calculator

Find the midpoint between two points.

Slope Calculator

Calculate slope between two points.

Line Equation Calculator

Find line equations from points or slope.

Angle Calculator

Convert and compute angles.

Pythagorean Theorem Calculator

Solve a²+b²=c² for right triangles.

Heron's Formula Calculator

Triangle area from three side lengths.

Coordinate Geometry Calculator

Distance, midpoint, and slope in one place.

Vector Angle Calculator

Angle between two vectors.

Law of Sines Calculator

Solve triangles with the law of sines.

Law of Cosines Calculator

Solve triangles with the law of cosines.

Ellipse Calculator

Ellipse area and eccentricity.

Parabola Calculator

Focus and graph for y=a(x−h)²+k.

Hyperbola Calculator

Hyperbola eccentricity from a and b.

Sphere Calculator

Sphere volume and surface area.

Cylinder Calculator

Cylinder volume and surface area.

Cone Calculator

Cone volume and surface area.

Pyramid Calculator

Pyramid volume from base area and height.

Trig Identity Simplifier

Simplify trigonometric expressions.

Unit Circle Calculator

Point (cos θ, sin θ) on the unit circle.

Average Calculator

Calculate mean average of numbers.

Standard Deviation Calculator

Calculate sample standard deviation.

Permutation Calculator

Calculate permutations (nPr).

Combination Calculator

Calculate combinations (nCr).

Median Calculator

Find the median of a data set.

Mode Calculator

Find the mode(s) of a data set.

Variance Calculator

Calculate sample or population variance.

Percentile Calculator

Find a percentile from a data set.

Quartile Calculator

Compute Q1, Q2, and Q3.

Interquartile range (Q3 − Q1).

Z-Score Calculator

Compute z-scores from mean and standard deviation.

Normal Distribution Calculator

PDF and CDF for the normal distribution.

Binomial Distribution Calculator

Binomial PMF and cumulative probability.

Poisson Distribution Calculator

Poisson PMF and cumulative probability.

Probability Calculator

Basic probability from favorable and total outcomes.

Regression Calculator

Simple linear regression (least squares).

Correlation Calculator

Pearson correlation coefficient.

Covariance Calculator

Sample covariance of paired data.

Confidence Interval Calculator

Mean confidence interval for known or sample σ.

Sample Size Calculator

Estimate sample size for a proportion or mean.

Standard Error Calculator

Standard error of the mean.

T-Score Calculator

Compute t-scores from sample statistics.

Bayes Theorem Calculator

Compute posterior probability P(H|E).

Hypothesis Test Calculator

One-sample z/t style test with approximate p-value.

Expected Value Calculator

Compute E[X] from values and probabilities.

Hypergeometric Distribution Calculator

Hypergeometric PMF P(X=k).

Pascal's Triangle Calculator

Generate rows of Pascal's triangle.

Chi-Square Calculator

Chi-square goodness-of-fit statistic.