Geometry Calculators

MiniWebtool’s 3D Distance Calculator finds the straight-line distance between two spatial points from their x, y, and z coordinates. A 3D diagram and worked formulas connect the distance with midpoint and displacement results.

Turn z = f(x, y) into a surface you can rotate and zoom in MiniWebtool’s 3D Surface Plotter. Set the domain and display style to inspect a two-variable function, then export the current view as a PNG.

Enter three sides or three vertex coordinates in MiniWebtool’s Angle Bisector Calculator to calculate a triangle’s angle bisectors. Find bisector lengths, division points on opposite sides, incenter and inradius, with an interactive diagram and step-by-step formulas.

Solve a circular arc from the measurements you know using MiniWebtool’s Arc Length Calculator. Find arc length, radius, or central angle, with degrees or radians, worked formulas, and a diagram of the sector.

Convert x and y to polar coordinates (r, θ) with MiniWebtool’s Cartesian to Polar Coordinates Converter. Choose precision up to 1000 decimals and see quadrant analysis and step-by-step verification.

MiniWebtool’s Circle Calculator derives radius, diameter, circumference, and area from one known circle measurement. Optional angle-based calculations add arcs, sectors, and segments, with decimal and exact π forms where applicable.

Find a triangle’s circumscribed circle with MiniWebtool’s Circumscribed Circle (Circumcircle) Calculator. Enter three sides or three vertex coordinates to find the circumradius, circumcenter, area and angles, with an interactive diagram and step-by-step formulas.

Generate the 2D flat pattern of a cone or truncated cone with MiniWebtool’s Cone Flat Pattern (Template) Generator. It calculates the outer radius, inner radius and sweep angle needed to cut the unrolled template from sheet metal, cardboard or paper for DIY, HVAC ductwork and crafting.

MiniWebtool’s Conic Section Identifier classifies Ax² + Bxy + Cy² + Dx + Ey + F = 0. Six coefficients reveal a circle, ellipse, parabola, hyperbola, or degenerate case, accompanied by geometric properties and a graph.

Analyze two points in a plane with MiniWebtool’s Coordinate Geometry Distance Calculator. Coordinates yield distance, midpoint, slope, and line relationships, with an interactive diagram and formulas connecting the numerical results to the geometry.

MiniWebtool’s Delaunay Triangulation Generator meshes 2D points using the Bowyer–Watson algorithm. Enter coordinates or a preset pattern to inspect triangle quality, empty circumcircles, the convex hull, and an optional Voronoi dual.

Measure straight-line separation in MiniWebtool’s Distance Between Two Points Calculator. Two 2D coordinate pairs produce Euclidean distance, with a plotted segment, midpoint, slope, and line-equation steps for geometric context.

Compare perimeter approximations in MiniWebtool’s Ellipse Circumference Calculator. Enter the two semi-axis lengths to see how different formulas estimate the ellipse’s boundary length, rather than applying the circular circumference formula.

MiniWebtool’s Equation of a Line Calculator accepts two points, a point and slope, or slope and intercept. The result shows applicable line forms, intercepts, and geometric relationships, with worked steps and a plotted line.

Connect polyhedral counts with topology in MiniWebtool’s Euler Characteristic Calculator. Vertices, edges, and faces determine χ = V − E + F, with surface classification and genus interpretation under the relevant surface assumptions.

MiniWebtool’s Frustum Calculator finds volume, surface areas, and slant height for a truncated cone from its two radii and perpendicular height. A diagram and formula steps show how those measurements define the solid.

MiniWebtool’s General Triangle Solver calculates missing sides and angles from suitable SSS, SAS, ASA, AAS, or SSA information. Worked trigonometric steps accompany the resulting area and perimeter, with the available measurements determining which triangle solutions are possible.

A golden rectangle has long and short sides in the ratio φ:1. MiniWebtool’s Golden Rectangle Calculator derives its dimensions from a known side, diagonal, area, or perimeter, with diagrams and steps at your chosen decimal precision.

Divide a line so the whole-to-longer ratio equals the longer-to-shorter ratio. MiniWebtool’s Golden Section Calculator finds the missing lengths from the total or either segment and explains the golden-ratio relationship with a diagram.

MiniWebtool’s Great Circle Distance Calculator finds the shortest surface route between two latitude-longitude coordinates on a spherical Earth model. Results include kilometers, miles, nautical miles, bearings, and the midpoint; they do not represent a road route.

When you know all three triangle sides, MiniWebtool’s Heron's Formula Calculator finds the area without needing an angle. It also derives the semiperimeter and related measurements, with a diagram showing the triangle defined by your inputs.

Inspect a hyperbola from its equation using MiniWebtool’s Hyperbola Calculator. Standard and general forms yield the center, vertices, foci, asymptotes, and eccentricity, with a graph and algebraic steps connecting the equation to its geometry.

Find the longest side of a right triangle from its two legs. MiniWebtool’s Hypotenuse Calculator applies the Pythagorean theorem and also derives internal angles, perimeter, and area with calculation steps.

The incircle touches all three sides of a triangle. MiniWebtool’s Inscribed Circle (Incircle) Calculator finds its radius, center, and contact geometry from three side lengths or vertex coordinates, with a diagram and formula steps.

Measure a polygon whose sides are not regular using MiniWebtool’s Irregular Polygon Area Calculator. Enter up to 100 vertices or draw them on the canvas to obtain area, perimeter, and centroid with calculation steps.

MiniWebtool’s Midpoint Calculator averages the coordinates of two points to locate the point halfway between them. A graph and worked solution show the midpoint alongside the distance between the endpoints.

Read a parabola’s geometry from its equation with MiniWebtool’s Parabola Calculator. Supported forms yield the vertex, focus, directrix, symmetry axis, and latus rectum, with worked steps and a graph tying the properties together.

MiniWebtool’s Parallel and Perpendicular Line Calculator constructs both lines through a specified point from an existing line equation. The graph and steps explain shared slopes and perpendicular relationships, including the resulting equations.

Follow x(t) and y(t) as a point moves through MiniWebtool’s Parametric Curve Grapher. Animated tracing, tangent vectors, speed coloring, and curvature tools connect the parameter to the shape, with presets for familiar curves.

Find a point’s shortest distance to a plane with MiniWebtool’s Point to Plane Distance Calculator. Coordinates and plane coefficients produce the perpendicular distance and its foot, with a 3D view and step-by-step calculation.

Construct a line from a point and slope or two points using MiniWebtool’s Point-Slope Form Calculator. It shows point-slope, slope-intercept, and standard forms with worked steps and a graph of the relationship.

MiniWebtool’s Polar to Cartesian Converter transforms radius and angle into x and y coordinates. A diagram, quadrant identification, and formula steps explain the conversion, with configurable decimal display precision.

Count connections between nonadjacent vertices using MiniWebtool’s Polygon Diagonals Calculator. Enter the side count to find diagonals and the interior-angle sum, plus the individual interior angle when the polygon is regular.

Use a² + b² = c² to find a missing right-triangle side in MiniWebtool’s Pythagorean Theorem Calculator. Worked steps and a diagram accompany area, perimeter, and angle calculations for the resulting triangle.

Find a rectangle’s missing measurements with MiniWebtool’s Rectangle Calculator. Two known values determine related dimensions, area, perimeter, and diagonal, with a diagram and calculation steps to explain their relationships.

A side count and side length define a regular polygon in MiniWebtool’s Regular Polygon Calculator. Explore its area, perimeter, apothem, radii, angles, and diagonals with formulas and a matching diagram.

Calculate the area of any polygon from its (x, y) vertex coordinates with MiniWebtool’s Shoelace Formula Calculator, which uses the Shoelace (Gauss) algorithm. It supports triangles, quadrilaterals, and complex polygons for surveying, GIS, land measurement, and geometry problems.

MiniWebtool’s Slope Calculator derives a line’s slope, angle, and equation from two coordinate points. Follow rise over run in the calculation steps and inspect the line on a graph.

Write a line as y = mx + b with MiniWebtool’s Slope Intercept Form Calculator. Start from two points, a point and slope, or standard-form coefficients and see the conversion with a graph.

MiniWebtool’s Sphere Equation Calculator derives standard and general equations from a center and radius or diameter endpoints. Follow the algebra and inspect the sphere with a three-dimensional visualization.

MiniWebtool’s Square Calculator derives a square’s measurements from one known value: side, area, perimeter, or diagonal. Formulas and a diagram show how the remaining quantities are connected.

MiniWebtool’s Tangent Line to Circle Calculator finds tangents from a supplied point to a circle. See line equations, contact points, tangent lengths, and calculation steps illustrated on a diagram.

Calculate donut-shaped geometry with MiniWebtool’s Torus Calculator. Major and minor radii determine volume, surface area, and related dimensions, with formulas and a three-dimensional cross-section to explain the shape.

MiniWebtool’s Triangle Centroid Calculator averages three vertices’ x and y coordinates to locate the centroid. Calculation steps and median diagrams show why the point is the triangle’s balance center.

Locate the intersection of a triangle’s altitudes with MiniWebtool’s Triangle Orthocenter Calculator. Three vertex coordinates produce the orthocenter, altitude feet, and an illustrated Euler line alongside the working.