Math & Algebra Calculators

Calculate percent of a number, part-to-whole percentages, percent change, missing wholes, and reverse percent changes.

Find slope from two points or solve a missing coordinate from a known slope. Includes equations, intercepts, grade, graph, and step-by-step work.

Calculate sale price, stacked discounts, original price before a discount, or the discount percent between two prices.

Add, subtract, multiply, divide, simplify, compare, or convert decimals to fractions with steps and visual fraction bars.

Calculate percent error from experimental and accepted values with absolute error, signed error, and step-by-step substitution.

Find percentage increase or decrease between an original value and a new value with signed change, absolute change, and steps.

Simplify ratios, compare two quantities, and find unit rates with clear proportional reasoning steps.

Solve a missing value in a proportion using cross multiplication with clear substitution steps.

Solve for a right triangle hypotenuse or missing leg with square-root steps and triangle checks.

Solve ax^2 + bx + c = 0 with the quadratic formula, discriminant, roots, and vertex values.

Calculate triangle area, perimeter, and angles from three side lengths using Heron's formula and the law of cosines.

Calculate circle radius, diameter, circumference, and area from any one known circle measurement.

Find the area of rectangles, triangles, circles, trapezoids, and parallelograms with formulas and unit-aware steps.

Calculate volume for rectangular prisms, cylinders, spheres, and cones with formula steps.

Convert regular numbers to scientific notation and show coefficient, exponent, and engineering notation.

Round a number to a chosen number of significant figures and see the rounding place and scientific notation.

Calculate square roots, simplify exact radicals for whole numbers, and identify perfect squares.

Calculate powers with positive, negative, and decimal exponents while showing the exponent rule used.

Calculate logarithms in any valid base with common log, natural log, and change-of-base steps.

Find the greatest common factor and least common multiple for a list of positive integers with factor steps.

Factor a positive integer into primes and show the factor tree style division steps.

Solve a 2x2 linear system with elimination/determinant steps for x and y.

Find the distance between two coordinate points with dx, dy, squared distance, and square-root steps.

Find the midpoint between two coordinate points with coordinate-average steps.

Calculate triangle area from base and height with unit-friendly steps.

Calculate trapezoid area from two bases and height with average-base steps.

Calculate ellipse area from semi-major and semi-minor axes with the pi a b formula and equal-area circle check.

Calculate circle sector area from radius and central angle in degrees.

Calculate arc length from radius and central angle in degrees.

Calculate regular polygon area from side length and number of sides.

Calculate interior angle sum, each regular interior angle, and exterior angle for a polygon.

Calculate cylinder volume, base area, and lateral surface area from radius and height.

Calculate cone volume, base area, and slant height from radius and height.

Calculate sphere volume, surface area, and diameter from radius.

Calculate rectangular prism volume, surface area, and space diagonal from length, width, and height.

Calculate rectangular prism surface area, face areas, and volume from length, width, and height.

Calculate rectangular pyramid volume from base length, base width, and perpendicular height.

Calculate ellipsoid volume from three semi-axis lengths, plus a sphere-equivalent radius check.

Calculate circular segment area from radius and central angle, with sector, triangle, and arc-length checks.

Calculate sine, cosine, tangent, reciprocal trig ratios, and acute angle from right-triangle sides.

Solve the third side of a triangle from two sides and included angle using the law of cosines.

Calculate the nth term and partial sum of an arithmetic sequence.

Calculate the nth term and partial sum of a geometric sequence.