Algebra
Math and statistics calculators with step-by-step formulas and worked examples for students and professionals.
Quadratic Equation Calculator
Solve ax^2 + bx + c = 0 with the quadratic formula. Shows real or complex roots and the discriminant, with a worked step-by-step example.
Log Calculator
Calculate logarithms in any base with the change-of-base formula, plus the natural log (ln), common log (log10) and binary log (log2) shown together.
Exponent Calculator
Raise any base to any power, including negative and fractional exponents, with the result in plain and scientific notation and the exponent rules explained.
Prime Number Calculator
Check whether a number is prime, get its full prime factorization, and find the next prime — with trial division explained and worked examples.
Matrix Calculator
Calculate the determinant, trace and (for 2x2) inverse of a 2x2 or 3x3 matrix from row-major entries, with cofactor expansion shown step by step.
System of Equations Calculator
Solve a system of 2 or 3 linear equations by Gaussian elimination. Enter the augmented matrix coefficients and get x, y (and z) instantly.
Complex Number Calculator
Add, subtract, multiply or divide two complex numbers (a + bi) and see the result, modulus and argument instantly. Free complex arithmetic calculator.
Exponential Growth Calculator
Calculate exponential growth or decay over time using the compound growth formula. Get the final value, total change and doubling or halving time.
Arithmetic Sequence Calculator
Find the nth term and the sum of an arithmetic sequence from its first term and common difference. Free calculator with a preview of the sequence.
Geometric Sequence Calculator
Find the nth term, partial sum, and (if convergent) infinite sum of a geometric sequence from its first term and common ratio. Free and instant.
Inequality Calculator
Solve a one-variable linear inequality of the form ax + b [<,≤,>,≥] c and get the solution range for x, with correct sign-flip handling.