Geometry Calculators
Calculate dimensions and properties of common two-dimensional and three-dimensional shapes using explicit geometry formulas. The collection covers practical area, perimeter, surface-area and volume calculations.
21 certified calculators in this category. Published tools use deterministic calculation logic and expose their formulas, assumptions and methodology.
Choose a calculator
Hypotenuse Calculator
Find the hypotenuse of a right triangle from its two perpendicular sides.
Open calculator →CertifiedPythagorean Theorem Calculator
Solve the Pythagorean theorem for the hypotenuse of a right triangle.
Open calculator →CertifiedRectangle Area Calculator
Calculate the area of a rectangle.
Open calculator →CertifiedRectangle Perimeter Calculator
Calculate the perimeter of a rectangle.
Open calculator →CertifiedSquare Area Calculator
Calculate the area of a square.
Open calculator →CertifiedSquare Perimeter Calculator
Calculate the perimeter of a square.
Open calculator →CertifiedTriangle Area Calculator
Calculate triangle area from base and perpendicular height.
Open calculator →CertifiedCircle Area Calculator
Calculate the area enclosed by a circle.
Open calculator →CertifiedCircle Circumference Calculator
Calculate the circumference of a circle.
Open calculator →CertifiedCircle Diameter Calculator
Find a circle diameter from its radius.
Open calculator →CertifiedParallelogram Area Calculator
Calculate parallelogram area.
Open calculator →CertifiedTrapezoid Area Calculator
Calculate the full area of a trapezoid from both parallel sides and perpendicular height.
Open calculator →CertifiedPolygon Area Calculator
Calculate the area of a regular polygon from its number of sides and side length.
Open calculator →CertifiedSphere Volume Calculator
Calculate the volume of a sphere.
Open calculator →CertifiedSphere Surface Area Calculator
Calculate the surface area of a sphere.
Open calculator →CertifiedCylinder Volume Calculator
Calculate cylinder volume.
Open calculator →CertifiedCone Volume Calculator
Calculate cone volume.
Open calculator →CertifiedRectangular Prism Volume Calculator
Calculate the full volume of a rectangular prism.
Open calculator →CertifiedTriangle Calculator
Solve a triangle from three side lengths with area, perimeter and angles.
Open calculator →CertifiedRight Triangle Calculator
Solve a right triangle from its two perpendicular legs.
Open calculator →CertifiedSurface Area Calculator
Calculate rectangular-prism surface area and volume.
Open calculator →Calculation guidance
Use measurements from the same unit system unless the calculator explicitly supports conversion. Geometry results inherit squared or cubed units for area and volume, so confirm the input units before using a result in a real-world project.
How CalcuMint publishes calculators
Public calculators in this directory must pass the certified-content publication gate. Individual calculator pages show the formula, worked examples, assumptions, methodology and source information so results can be reviewed instead of treated as a black box.
Related calculator categories
Math Calculators
Percentages, powers, logarithms, trigonometry, ratios and practical mathematics.
Explore category →Advanced Math & Graphing
Equation solvers, matrices, calculus and graphing tools with deterministic steps.
Explore category →Statistics Calculators
Means, rates, proportions, variability and descriptive statistics.
Explore category →Science Calculators
Deterministic physics, chemistry, electrical and measurement formulas.
Explore category →Engineering & Construction Calculators
Deterministic material, area and construction quantity calculators.
Explore category →Everyday Calculators
Practical calculators for costs, recipes, utilities, projects and daily decisions.
Explore category →Unit Conversion Calculators
Convert common units of length, mass, volume and temperature.
Explore category →