Arithmetic, percentages, algebra, geometry and advanced math. Everything you need in one place, from everyday math to specialist tools.
All tools are grouped into sections so you can find what you need quickly.
Addition, subtraction, multiplication, division, fractions, factors and multiples, primes, rounding, exponents and roots.
Add, subtract, multiply or divide any two numbers and get the result instantly.
Open calculatorEvaluate a full mathematical expression with parentheses, exponents and functions.
Open calculatorConvert any fraction to a decimal, with the simplified fraction and percentage.
Open calculatorConvert any decimal number to a simplified fraction and mixed number.
Open calculatorTest whether a number is prime, factor it, and list primes up to a limit.
Open calculatorFind the greatest common divisor of two or more numbers with the method explained.
Open calculatorFind the least common multiple of two or more numbers quickly.
Open calculatorCalculate powers, square roots, cube roots and nth roots.
Open calculatorAdd, subtract, multiply and divide decimal numbers and see the result as a fraction.
Open calculatorConvert numbers to scientific and engineering notation, and back.
Open calculatorEvaluate a chain of arithmetic operations while respecting multiplication and division precedence.
Open calculatorConvert mixed numbers to improper fractions and back, with simplification.
Open calculatorList the divisors of any number, their sum, and its first multiples.
Open calculatorCalculate the quotient and remainder of a division and verify the result.
Open calculatorFind the absolute value of any number, its sign, and its additive inverse.
Open calculatorRound any number to a whole number or a chosen decimal place.
Open calculatorAdd, subtract, multiply and divide fractions with simplified results.
Open calculatorPerform operations on negative and positive numbers and understand the sign rules.
Open calculatorPercentages, increase and decrease, relative difference, direct and inverse proportion, sharing amounts, and the golden ratio.
Find a percentage of any value quickly and accurately.
Open calculatorMeasure the percentage increase or decrease between two values.
Open calculatorCalculate a value after a percentage increase, including the increase amount.
Open calculatorCalculate a value after a percentage decrease, including the decrease amount.
Open calculatorFind the whole number when you know a part and its percentage.
Open calculatorSimplify the ratio between two numbers and see its value and each part's percentage.
Open calculatorCompare two values using absolute and relative percentage difference.
Open calculatorApply a series of percentage increases and decreases and calculate the total change.
Open calculatorSolve the proportion a/b = c/x to find the unknown value x.
Open calculatorSplit an amount or quantity into shares according to a given ratio.
Open calculatorCalculate the unknown value in a direct proportion relationship.
Open calculatorCalculate the unknown value in an inverse proportion relationship.
Open calculatorSplit a length according to the golden ratio and calculate the larger and smaller parts.
Open calculatorCalculate the average of a set of values as a percentage of a reference value.
Open calculatorLinear and quadratic equations, systems, inequalities, simplifying expressions, factoring, sequences, and functions.
Solve ax² + bx + c = 0 with the discriminant, roots and parabola vertex.
Open calculatorSolve the linear equation ax + b = c step by step and verify the solution.
Open calculatorFind the nth term and the sum of the first n terms of an arithmetic sequence.
Open calculatorSolve a system of two linear equations in two variables using determinants and identify its type.
Open calculatorFind the nth term and sum of a geometric sequence, including the infinite sum when it converges.
Open calculatorFactor ax² + bx + c and see its roots and factorization type.
Open calculatorSolve |ax + b| = c and see the number of solutions and both cases.
Open calculatorCombine like terms to write a polynomial in simplest form, with its degree and leading coefficient.
Open calculatorSolve a system of three linear equations in three variables using determinants.
Open calculatorEvaluate f(x) at a given value, with additional sample points.
Open calculatorSolve the inequality ax + b ⋚ c and see the solution set in interval notation.
Open calculatorSolve a · bˣ = c using logarithms, with verification of the solution.
Open calculatorSolve log_b(ax + c) = d by converting it to an exponential equation.
Open calculatorApply the identity a² − b² = (a − b)(a + b) and compute the value and difference.
Open calculatorCompute f(g(x)) and g(f(x)) from two function expressions and an x value.
Open calculatorAreas and perimeters, Pythagoras, right triangles, angles, trigonometric functions, distances, and volumes.
Compute sine, cosine, tangent and reciprocal functions for an angle in degrees or radians.
Open calculatorFind the hypotenuse of a right triangle from its legs, with perimeter and area.
Open calculatorCalculate a circle's diameter, circumference and area from its radius.
Open calculatorFind all three sides of a right triangle from an angle and one known side.
Open calculatorCalculate a triangle's area from its base and height, with the doubled area.
Open calculatorCalculate a rectangle's area, perimeter and diagonal from its length and width.
Open calculatorCalculate the slope of a line through two points, its angle and its equation.
Open calculatorFind the third side and remaining angles of a triangle from two sides and the included angle.
Open calculatorCalculate the distance between two points in the coordinate plane, with horizontal and vertical differences.
Open calculatorCalculate a sphere's volume, surface area and circumference from its radius.
Open calculatorSolve a non-right triangle with the law of sines from two angles and a side.
Open calculatorCalculate a cube's volume, surface area and diagonals from its side length.
Open calculatorCalculate a cylinder's volume, lateral surface area and total surface area from radius and height.
Open calculatorCalculate a parallelogram's area and perimeter from its base, height and side.
Open calculatorCalculate a rectangular prism's volume, surface area and space diagonal.
Open calculatorCalculate the midpoint between two points and the distance between them.
Open calculatorCalculate a trapezoid's area, perimeter and median from its bases and height.
Open calculatorCalculate a cone's volume, surface area and slant height from radius and height.
Open calculatorCalculate a rhombus's area, side length and perimeter from its diagonals.
Open calculatorCalculate a regular polygon's perimeter, area and angles from its side count and side length.
Open calculatorMatrices and determinants, vectors, differentiation and integration, limits, complex numbers, factorials, and number systems.
Calculate the first and second derivative of a function at a point, with tangent and normal lines.
Open calculatorCalculate a function's limit at a point or at infinity, with one-sided limits and a continuity check.
Open calculatorCalculate a definite integral over an interval using Simpson's rule, with the average value.
Open calculatorCalculate a logarithm in any base, with the natural and common logarithms and inverse relations.
Open calculatorCalculate an integer factorial with its digit count, trailing zeros and scientific notation.
Open calculatorCalculate a vector's magnitude, direction, unit vector and quadrant.
Open calculatorCalculate the number of permutations and combinations when choosing r items from n.
Open calculatorAdd, subtract or multiply two 2×2 matrices and see the determinant and trace.
Open calculatorAdd, subtract, multiply or divide two complex numbers, with modulus, argument and polar form.
Open calculatorConvert whole numbers between binary, octal, decimal and hexadecimal.
Open calculatorCalculate the determinant of a 3×3 matrix with its trace and a cofactor.
Open calculatorCalculate the dot product, cross product and angle between two vectors in space.
Open calculatorFind the inverse of a 2×2 matrix and its determinant, or check that it is not invertible.
Open calculatorLength and distance, weight and mass, area, volume, temperature and pressure, speed, energy, and data.
View allAge, date differences, Gregorian and Hijri calendars, time zones, and event planning.
View allBody indicators, calories and nutrition, fitness and running, sleep, water, and pregnancy age.
View allTaxes, discounts, loans and interest.
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