Calculators

53 tools · Scientific, graphing, matrices, numbers, and general math 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.

Significant Figures Calculator

Count or round a number to a chosen number of significant figures.

Error Propagation Calculator

Propagate uncertainties for addition, subtraction, multiplication, and division.

Measurement Uncertainty Calculator

Combine Type A (repeatability) and Type B (resolution) uncertainties.

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.