Free math calculators, unit converters, and formula references — with clear steps.

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Math calculators with clear steps — percentages, averages, fractions, roots, exponents, and more.

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Geometry (9)

9 matches· Geometry

Geometry

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Area CalculatorArea of square, rectangle, triangle (Heron), trapezoid, circle, sector, ellipse, and parallelogram — with length units and square-unit conversions.
Circle CalculatorFrom any one of radius, diameter, circumference, or area, compute the other three measures of a circle.
Triangle CalculatorSolve any triangle from three of sides a, b, c and angles A, B, C. Get area, medians, inradius, circumradius, and a scale diagram.
Right Triangle CalculatorEnter any two of a, b, c, α, β, altitude h, area, or perimeter to solve a right triangle completely.
Pythagorean Theorem CalculatorSolve a² + b² = c² given any two sides of a right triangle. See squares on each side and stepped solutions.
Volume CalculatorVolume of sphere, cone, cube, cylinder, tank, capsule, cap, frustum, ellipsoid, pyramid, and tube with unit conversions.
Surface Area CalculatorSurface area of sphere, cone, cube, cylinder, tank, capsule, cap, frustum, ellipsoid, and pyramid with unit conversions.
Distance Calculator2D/3D coordinate distance and midpoint; lat/lon great-circle with Lambert and haversine; DMS or decimal; OpenStreetMap pick and place search.
Slope CalculatorSlope, incline angle, distance, rise/run, and line equation from two points or point + slope.

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