Geometry Calculators: Clear & Accurate Geometric Solutions

Geometry Tools That Help You See Shapes Better

Geometry doesn't have to be confusing. Whether you're learning for school, solving a tricky homework question, or just brushing up on shapes and angles, we've made it easier. Our collection of calculators is built to help you work through problems without all the stress.

From triangles and circles to prisms and pyramids, there’s a tool here for almost every shape and formula you might come across. With calculators like the Triangle Calculator, Unit Circle Calculator, and Volume Calculator, you can check your answers or walk step-by-step through a new concept.

Below, you’ll find a few ways these calculators can help you. Each section focuses on something a little different—but they all come back to the same idea: making geometry easier to understand.

Understand Shapes From All Angles

Angles are everywhere in geometry, and getting them right is key. Whether you’re measuring inside a triangle or figuring out how one angle compares to another, there’s help available.

• The Reference Angle Calculator and Coterminal Angle Calculator help you break down angles on the coordinate plane.
• Need to find out where a triangle’s height lands? The Triangle Height Calculator can guide you.
• Want to brush up on special angles on the unit circle? The Unit Circle Calculator makes it easier to see the patterns.
• Try the Clock Angle Calculator to figure out how far apart clock hands are—it’s a fun way to practice angle measurement.
• The Triangle Angle Calculator helps when you have two angles and need to find the third.

If you’re working with vectors or more advanced problems, the Angle Between Two Vectors Calculator shows you how to calculate direction and distance between them.

Break Down Shapes into Parts You Know

Sometimes, a big shape can seem complicated—until you realize it’s made of pieces you already understand.

• Use the Trapezoid Calculator to figure out area and height when the sides aren’t all the same.
• The Polygon Calculator lets you explore all kinds of regular shapes—pentagons, hexagons, octagons, and more.
• If you’re working with circles, try the Chord Calculator or Sector Area Calculator to find parts of the circle, not just the whole.
• Want to compare parts and wholes? The Circle Theorems Calculator explains the rules behind arcs, tangents, and inscribed angles.

Need help telling what kind of triangle you're looking at? The Classifying Triangles Calculator and Similar Triangles Calculator show how to tell them apart. You can also check out the Equilateral Triangle Calculator, Isosceles Triangle Calculator, or Right Triangle Calculator to work with specific types.

Measure Distances Without Guessing

Finding how far things are apart doesn’t have to involve complicated Math on paper. These tools make it easier to find distance, slope, and direction—whether you're in a coordinate grid or a 3D shape.

• Start with the Distance Formula Calculator or Distance Calculator to find how far two points are from each other.
• Use the Slope Calculator or Slope Percentage Calculator if you’re working on a graph.
• Have two points and want the line equation between them? Try the Line Equation from Two Points Calculator.
• The Rise Over Run Calculator makes slope easier to understand with a clear breakdown.
• Need to find the halfway point? The Endpoint Calculator helps you get it right every time.

Geometry gets a lot easier when you can measure directly, not just estimate.

Volume, Area, and Surface—Made Straightforward

These are the numbers that tell you how big something is. Whether it's the amount of space inside a box or the area of a field, our calculators are ready.

• The Volume Calculator works for many shapes, or you can go specific with the Cylinder Calculator, Cone Calculator, Sphere Calculator, Cube Calculator, or Pyramid Volume Calculator.
• Measuring 3D shapes? The Surface Area Calculator breaks it down step by step.
• For 2D shapes, the Area Calculator, Triangle Area Calculator, and Circle Calculator are perfect for finding space inside a shape.
• Use the Perimeter Calculator or Circumference Calculator if you’re measuring around the outside.
• Working with a Rectangular Prism Calculator or Triangular Prism Calculator? These help with both surface area and volume.

From flat shapes to solid ones, these tools keep the math from feeling overwhelming.

Tackle Triangles from Every Side

Triangles show up in almost every part of geometry. We’ve built tools to help you with all kinds—whether they’re right, special, or somewhere in between.

• Start with the Triangle Calculator to find sides, angles, and area.
• Use the Pythagorean Theorem Calculator when you're working with right triangles.
• The Hypotenuse Calculator is great when you know two sides and want the third.
• Working with special triangles like 30-60-90 or 45-45-90? We have separate calculators for each.
• Try the Special Right Triangles Calculator for a quick overview of all the common types.
• Want to find the center of a triangle? The Orthocenter Calculator and Centroid Calculator show you how.

Triangles are easier to handle once you break them down into smaller parts—and these tools help with that every step of the way.

Ready to try one out? Pick any calculator from the list and see how much clearer geometry can be.