Geometry Calculators

89 free geometry calculators for shapes, triangles, circles, lines, areas, and coordinates.

Browse geometry calculators by topic. This directory groups tools for coordinates, lines, triangles, circles, polygons, curved shapes, and 3D solids so each geometry problem has a clear starting point.

Featured Geometry Tools Start here

Distance Between Two Points Calculator Triangle Centers Calculator Arc Length & Sector Area Calculator Regular Polygon Area & Perimeter Calculator Circle Area Calculator Heron's Formula Calculator

Browse Geometry Calculators by Topic

Coordinate Geometry Lines and Angles Triangle Geometry Circle Geometry Polygons and 2D Shapes Ellipse and Curved Shapes 3D Geometry and Solids

Coordinate Geometry

14 tools

Calculate distances, slopes, midpoints, line equations, reflections, intersections, and coordinate-based polygon measurements.

Collinear Points Calculator Distance Between Two Points Calculator Slope Calculator Midpoint Calculator Endpoint Calculator Point on Line Checker Line Equation from Two Points Calculator Section Ratio Calculator Point Symmetry Calculator Point Reflection Over Line Calculator Coordinate Perimeter Calculator Triangle Area Coordinate Calculator 3D Distance Calculator

Lines and Angles

6 tools

Work with parallel lines, perpendicular lines, angle relationships, perpendicular bisectors, and line construction problems.

Angle Between Lines Calculator Parallel Perpendicular Calculator Parallel Line Through Point Calculator Perpendicular Line Through Point Calculator Perpendicular Bisector Calculator Angle Bisector Theorem Calculator

Triangle Geometry

13 tools

Solve triangle centers, side lengths, angles, areas, special triangle properties, and triangle theorem problems.

Triangle Centers Calculator Centroid to Vertex Distance Calculator Circumradius & Inradius Calculator Midsegment Theorem Calculator Triangle Perimeter Calculator Right Triangle Calculator Pythagorean Theorem Calculator Heron's Formula Calculator Euler Line Calculator Law of Cosines Calculator Triangle Angle Calculator Similar Triangles Calculator Equilateral Triangle Calculator

Circle Geometry

14 tools

Calculate circle area, circumference, arc length, sector area, chords, tangents, circle equations, and circular regions.

Circle Circumference Calculator Circle Area Calculator Diameter Calculator Radius Calculator Arc Length & Sector Area Calculator Chord Length Calculator Circle Segment Area Calculator Sector Perimeter Calculator Annulus Area Calculator Semicircle Area Calculator Quarter Circle Area Calculator Circle Equation Calculator Circle Center and Radius Calculator Tangent Line to Circle Calculator

Polygons and 2D Shapes

20 tools

Find area, perimeter, diagonals, apothem, and angle properties for polygons and common plane shapes.

Ellipse and Curved Shapes

2 tools

Compute ellipse area, ellipse circumference, and measurements for curved planar shapes.

Ellipse Area Calculator Ellipse Circumference Calculator

3D Geometry and Solids

21 tools

Calculate volume, surface area, diagonals, and related measurements for prisms, cylinders, cones, spheres, pyramids, and other solids.

What Can You Do With These Geometry Tools?

These calculators cover plane geometry, coordinate geometry, triangle geometry, circle formulas, polygons, and 3D solids. Use them to verify formulas, calculate dimensions, compare shape properties, and solve geometry homework or design problems step by step.

Frequently Asked Questions

What geometry calculators are available here?▼

This page includes coordinate geometry, triangle, circle, polygon, plane shape, and 3D solid geometry calculators.

Which geometry tool should I use first?▼

For coordinate problems, start with distance, slope, midpoint, or line equation tools. For shapes, choose the matching triangle, circle, polygon, area, volume, or surface area calculator.

Do the geometry tools show formulas?▼

Many geometry calculators show formulas, substitutions, and step-by-step work so you can understand the calculation method.

Are these geometry calculators free?▼

Yes. The geometry calculators are free browser-based tools for students, teachers, and quick geometry checks.

Algebra Geometry Trigonometry Matrices Functions Number Theory Base Converter Electronics Statistics Life & Finance Simulators

Free online calculators and tools covering mathematics, unit conversion, text processing, and daily life. Accurate, fast, mobile-friendly, and completely free to use.

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