Math Calculators

Percentage, fraction, algebra and general-purpose math calculators for students and engineers.

16 calculators in this category

Quickly calculate X% of Y, what percentage one number is of another, or the percentage change between two values.

A free online TI-84 style scientific calculator. Evaluate any expression — trig, logs, roots, exponents, and parentheses — instantly.

Solve linear, quadratic, and 2-equation systems with full step-by-step working. Supports ax + b = c, ax² + bx + c = 0, and {ax+by=c, dx+ey=f}.

Add, subtract, multiply, or divide two fractions. Get a simplified fraction, mixed number, and decimal.

Find the straight-line distance between two points in the coordinate plane — uses the Pythagorean-derived distance formula.

Calculate any base raised to any power — including negative, fractional, and decimal exponents. Get the result, scientific notation, and explanation.

Find the greatest common factor (GCF) and least common multiple (LCM) of any set of integers.

Simplify ratios and solve proportions — find the missing term in A:B = C:D for cooking, scaling recipes, maps, and mixing ratios.

Solve any quadratic equation ax² + bx + c = 0. Get both roots — real or complex — and see the discriminant and vertex.

Enter any set of numbers to find the mean, median, mode, range, variance, and standard deviation.

Compute log_b(x) for any base — common log (base 10), natural log (base e), or any custom base. Includes change-of-base details.

Find the midpoint of a line segment between two points (x₁, y₁) and (x₂, y₂) — averages the x and y coordinates separately.

Solve a² + b² = c² for any missing side — find the hypotenuse from two legs, or a leg from the hypotenuse and one leg.

Find the slope of a line through two points — plus the y-intercept, the slope-intercept form (y = mx + b), and the angle of inclination.

Find the square root, cube root, or any nth root of a number — with simplified radical form for whole-number radicands.

Compute mean, variance, and standard deviation of a list of numbers — both sample (n−1) and population (n) versions.