Geometry Tools

Triangle Calculator (Heron + ½bh)

Calculate triangle properties including area, perimeter, angles, and sides. Free online triangle calculator for geometry problems. Solve any triangle with ease.

Circle Calculator (A = πr²)

Calculate circle circumference, area, radius, and diameter online. Free circle calculator for geometry and math problems. Get accurate results instantly.

Sphere Calculator (V = ⁴⁄₃πr³)

Calculate sphere volume and surface area from radius.

Cone Calculator (V = ⅓πr²h)

Calculate cone volume and surface area.

Cylinder Calculator (V = πr²h)

Calculate cylinder volume and surface area.

Square Calculator (A = a²)

Calculate square area and perimeter.

Hexagon Calculator (A = 3√3/2·s²)

Calculate regular hexagon area and perimeter.

Tank Fill Calculator (Cylinder)

Calculate cylinder volume and surface area.

Cube Calculator (V = a³)

Calculate cube volume, area, and diagonal.

Right Triangle Calculator (Pythagoras)

Calculate all sides and angles of a right triangle.

Rectangle Calculator (A = l×w)

Calculate rectangle area, perimeter, and diagonal online. Free rectangle calculator for geometry and construction. Find dimensions quickly and accurately.

Pyramid Calculator (V = ⅓A·h)

Calculate pyramid volume and surface area.

Sector Calculator (A = θπr²/360)

Calculate circle sector area and arc length.

Rhombus Area Calculator (A = ½d₁d₂)

Calculate rhombus area and perimeter.

Pentagon Area Calculator (A ≈ 1.7205s²)

Calculate regular pentagon area and perimeter.

Octagon Area Calculator (A ≈ 4.8284s²)

Calculate regular octagon area and perimeter.

Circle Chord Length Calculator (c = 2r·sin(θ/2))

Calculate circle chord length and distance from center.

Arc Length Calculator (s = rθ)

Calculate the arc length of a circle.

Circle Segment Area Calculator (A = ½r²(θ−sinθ))

Calculate the area of a circular segment.

Prism Volume Calculator (V = A·h)

Calculate prism volume and surface area.

Frustum Calculator (V = ⅓πh(R²+Rr+r²))

Calculate frustum volume and surface area.

Hemisphere Volume and Area Calculator (V = ⅔πr³)

Calculate hemisphere volume and surface area.

Torus Calculator (V = 2π²Rr²)

Calculate torus (donut shape) volume and surface area.

Ellipse Area Calculator (A = πab)

Calculate ellipse area and circumference.

Trapezoid Area Calculator (A = ½(a+b)h)

Calculate trapezoid area and perimeter.

Kite Calculator (A = ½d₁d₂)

Calculate kite area and perimeter.

3D distance between points Calculator

Calculate distance between two points in 3D space.

Rectangular Prism Volume Calculator (V = lwh)

Calculate rectangular prism volume and area.

Triangle Area from Sides (Heron) Calculator

Calculate triangle area from three sides.

Prism Surface Area Calculator (A = 2A+PL)

Calculate triangular prism surface area.

Regular Polygon Area Calculator (A = ½Pa)

Calculate regular polygon area.

Ellipse Perimeter Calculator (Ramanujan)

Calculate ellipse perimeter.

3D triangle area from vertices Calculator

Calculate triangle area from 3D coordinates.

Golden Rectangle Dimensions Calculator (φ = 1.618)

Calculate golden rectangle dimensions.

Sector Arc and Area Calculator (s = rθ, A = ½r²θ)

Calculate arc length and sector area of a circle.

Cone Volume Calculator (liters & gallons)

Calculate cone volume, lateral area, and slant height.

Sphere Surface Area Calculator (A = 4πr²)

Calculate sphere surface area, volume, and circumference.

Pyramid Volume Calculator (V = ⅓lwh)

Calculate pyramid volume, base area, and slant height.

Sector Area Calculator (A = ½r²θ)

Calculate sector area, arc length, and chord length.

Parallelogram Calculator - Calculate Area and Properties

Calculate parallelogram area, perimeter, height, and angles online. Free parallelogram calculator for geometry problems. Solve for missing dimensions easily.

Analytic Geometry Calculator - Coordinate Geometry Online

Solve analytic geometry problems including distance between points, midpoint, slope, and equations of lines. Free coordinate geometry calculator for math students.

Coordinates Calculator - Convert Coordinate Systems

Calculate and convert between different coordinate systems including Cartesian, polar, and geographic coordinates. Free coordinate converter for math and navigation.

Wedge Volume Calculator (V = ½bhl)

Calculate wedge volume.

Circle Segment Calculator (from height h)

Calculate circle segment area.

Annulus Calculator (A = π(R²−r²))

Calculate annulus area and perimeter.

Circular Ring Area Calculator (A = πw(R+r))

Calculate circular ring properties.

Barrel Volume Calculator (V ≈ πh(2D²+d²)/12)

Calculate barrel volume.

Tetrahedron Volume and Area Calculator (V = a³/6√2)

Calculate regular tetrahedron volume and area.