3D Geometry Calculator: Free AI Help for Volume & Surface Area
Solid geometry is one part of the math curriculum. For algebra, geometry, and more, visit the full AI Math Solver.
Cones, spheres, and composite solids all use different formulas, and it is easy to mix them up. Our free 3D geometry calculator no sign up tool identifies the right formula for volume or surface area and works through every step so you understand where each number came from.
How to Use the 3D Geometry Calculator
Every 3D solid has its own volume and surface area formula. Our tool identifies the shape and applies the right one.
Input Your Solid & Measurements
Type in the shape (prism, sphere, cone, cylinder, pyramid) and the given measurements.
Upload for Instant Analysis
Snap a photo of your worksheet or textbook diagram and the solver will read and process it automatically.
Step-by-Step Breakdown
See the correct formula selected and every substitution and calculation explained, not just the final volume.
What Our 3D Geometry Calculator Covers
From basic prisms to composite solids, this calculator covers the full K-12 solid geometry curriculum.
Prisms & Cylinders
Find the volume and surface area of rectangular prisms, triangular prisms, and cylinders.
Spheres
Calculate the volume and surface area of spheres and hemispheres using radius or diameter.
Cones & Pyramids
Solve for volume and surface area of cones and pyramids, including slant height calculations.
Cross-Sections
Identify and describe the 2D cross-sections created by slicing a 3D solid.
Composite Solids
Break composite shapes into simple solids to find total volume or surface area.
Word Problems
Translate real-world problems, like filling a tank or wrapping a box, into solvable 3D geometry.
3D Geometry Support for Every Student, Anytime
Solid geometry starts simple and builds toward calculus applications. Our tool matches the depth to your course.
Middle School: Prisms & Cylinders
Master volume and surface area for the most common solids taught in middle school math.
High School: Spheres, Cones & Composites
Work through spheres, cones, pyramids, and composite solids for standard high school geometry.
College: Solids of Revolution
Apply solid geometry concepts to calculus problems involving solids of revolution and integration.
Get Instant Help with 3D Geometry Assignments
Get the right formula, the right substitution, and a full explanation every time.
Problem Sets
Quizzes & Tests
Word Problems
Worksheets
Get 3D Geometry Help Anytime, Anywhere
Ready to stop mixing up your volume formulas? Use our free 3D Geometry Calculator today.
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Need Help Beyond 3D Geometry?
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Used by students globally for standardized exam preparation and daily assignments.