Calculator
Type the whole expression and get the result instantly, brackets and functions included.
Percentage, fraction, equation, power, matrix and calculus tools.
Type the whole expression and get the result instantly, brackets and functions included.
The four most common percentage calculations in a single tool.
Trigonometry, logarithms, exponentials and factorials, with a degrees/radians switch.
Solve direct and inverse proportions by entering the three known values.
Paste your list of numbers and get the mean, median, mode, range and standard deviation.
Add, subtract, multiply or divide two fractions and get the result already simplified.
Solve ax² + bx + c = 0 with the discriminant, both roots and the parabola vertex.
Calculate the area and perimeter of squares, circles, triangles, trapezoids and ellipses.
Solve equations of the form ax + b = c and check the answer automatically.
Differentiate functions symbolically and evaluate the derivative at a given point.
Compute the area under a curve between two limits using Simpson’s rule.
Raise any number to an integer, decimal or negative exponent.
Find the hypotenuse or a leg of a right triangle, with area and perimeter.
Calculate roots of any index, including negative numbers with an odd index.
Compute the logarithm in any base and read ln, log₁₀ and log₂ at the same time.
Volume and surface area of cubes, spheres, cylinders, cones, prisms and pyramids.
Find the GCD of two or more whole numbers using Euclid’s algorithm.
Compute the LCM of several numbers to add fractions or synchronise repeating cycles.
Add, subtract and multiply matrices, and compute determinants and transposes.
This section covers everything from everyday arithmetic to differential calculus. Every tool shows the formula it applies and a worked example, so you can verify the result by hand.
Looking for a specific operation? Type its name in the search box — common synonyms (GCD, nth root, per cent) are indexed too.