All calculators — with steps.

Divide whole numbers and get the quotient and remainder with every long-division step shown.

Evaluate any arithmetic expression with the correct order of operations (PEMDAS/BODMAS) and see every step.

Add, subtract, multiply & divide fractions with step-by-step solutions and decimal equivalents.

Calculate percentages, percentage change, and “what percent of” problems.

Find the Greatest Common Divisor and Least Common Multiple with prime factorization steps.

Break any integer into its prime factors. Shows expanded and power form with step-by-step division.

Calculate powers, roots, and negative exponents with step-by-step solutions.

Simplify ratios, solve proportions, and scale ratio values.

Convert numbers to and from scientific notation. Multiply and divide in scientific form.

Compute log, ln, log₂ or any custom base with the change-of-base formula.

Find the slope, y-intercept, and equation y = mx + b of a line through two points.

Solve two linear equations in two unknowns. Shows the determinant, x and y by Cramer's rule, and graphs the lines with their intersection.

Differentiate any polynomial in x with the power rule. See term-by-term working and a graph of f and f'.

Find the nth term and the sum of an arithmetic or geometric sequence, with steps and a plot of the terms.

Solve linear equations step by step. Supports ax + b = c and similar forms.

Solve ax² + bx + c = 0 with the quadratic formula. Shows discriminant and all roots.

Combine like terms and distribute single-variable polynomial expressions step by step.

Find the distance between two points and their midpoint, step by step.

Solve a triangle from three sides (SSS) or two sides and the included angle (SAS): all sides, angles, area and perimeter.

Find a circle's area, circumference, radius, and diameter, plus arc length and sector area from a central angle.

Find the magnitude, sum, difference, dot product, and angle between two 2D vectors, with full step-by-step working.

Calculate area, perimeter, volume, and surface area for common 2D and 3D shapes.

Find the missing side of a right triangle using a² + b² = c².

Sin, cos, tan and inverse functions in degrees or radians with exact values for common angles.

Compute nPr and nCr from n and r, with both formulas worked out step by step.

Calculate mean, median, mode, range, and standard deviation from a data set.

Project mutual fund and savings growth with year-by-year table, chart, and the formula behind it.

Enter a fraction, decimal, or percent and convert it to the other two — fraction reduced to lowest terms, with every step shown.

Convert between metric and imperial units for length, weight, volume, and temperature.