Solve mathematical and scientific problems with 4 essential calculators. From geometry and statistics to percentages, we've got your calculations covered.
Calculate the area of various shapes including rectangles, circles, triangles, and more complex polygons.
Calculate Now →Compute the volume of 3D shapes like cubes, spheres, cylinders, cones, and pyramids.
Calculate Now →Perform various percentage calculations including increase, decrease, and percentage of a number.
Calculate Now →Calculate mean, median, mode, standard deviation, and other statistical measures for data sets.
Calculate Now →These 4 science and math calculators cover the most frequently needed calculations in education, construction, engineering, and data analysis — with step-by-step explanations so you understand the math, not just the answer.
Area and volume for all shapes
Change, increase, decrease, ratio
Mean, median, mode, SD, quartiles
Area formulas: Rectangle = length × width. Triangle = ½ × base × height. Circle = π × r². Trapezoid = ½ × (base1 + base2) × height. Ellipse = π × a × b. Regular hexagon = (3√3/2) × side². Our area calculator covers all common geometric shapes with visual diagrams and accepts any unit of measurement.
Mean (average) = sum of all values ÷ count. Best for symmetric distributions without outliers. Median = middle value when sorted. Best for skewed data like income or prices (a few very high values won't distort it). Mode = most frequent value. Best for categorical data. Our statistics calculator computes all three simultaneously along with standard deviation, variance, and quartiles.
Percentage change = ((New Value − Old Value) ÷ Old Value) × 100. A price that went from $80 to $100: ((100−80)÷80)×100 = +25%. A discount from $100 to $75: ((75−100)÷100)×100 = −25%. Our percentage calculator handles percentage of, percentage change, percentage increase/decrease, and what percentage X is of Y.
Volume formulas: Rectangular box = length × width × height. Cylinder = π × r² × height. Sphere = (4/3) × π × r³. Cone = (1/3) × π × r² × height. Pyramid = (1/3) × base area × height. Our volume calculator covers all standard 3D shapes with unit conversions between mm³, cm³, liters, gallons, and cubic feet/inches.