This interactive guide helps you better understand the wide range of unique LEGO parts, with a focus on the most common parts you will find in current LEGO sets. I hope it helps you discover interesting parts you might have overlooked and identify a hierarchal sorting system that matches the way you like to build.

The LEGO Parts Guide is by Tom Alphin, author of The LEGO Architect.

Getting Started

The LEGO Group produces thousands of unique parts which connect using more than a dozen different connection types. To help you better understand the vast range of LEGO parts, I've created lists of the most common parts, as well as organizing common parts into categories based on their overall function and the connection types they use.

Many people find this hierarchal approach beneficial when trying to understand how LEGO works or when designing the perfect LEGO storage system for your home. You may also notice that some parts could go in more than one category because they have multiple connections and functions. In these cases, parts are organized into the categories which match how the part is most commonly used. If you prefer to put it somewhere else, that's great — it's your LEGO Collection!

Because this is meant to be a practical guide, it focuses on the most common parts and ignores subtle part variations that rarely matter.

This guide is meant to complement other resources here at Brick Architect such as our LEGO Storage Guide and printable LEGO Brick Labels collection.

Explore the Most Common LEGO Parts

One way to explore the wide range of LEGO parts is to highlight the parts which are the most common, which is why I've created two galleries where you can explore the most common parts being produced in current sets, or the most common parts of all time.

Explore by Categories

1. Basic (101)
Classic LEGO Bricks, Plates, and Tiles can be stacked vertically by attaching the round studs with a small amount of pressure.
2. Wall (86)
Panels, walls, doors, and related parts make it easier to construct models than using bricks and plates alone.
3. SNOT (43)
These parts allow you to attach studs facing outwards (Studs Not On Top) or attach studs at an offset from the normal grid.
4. Angle (145)
Slopes, wedges, and windscreens allow you to include angled sections in your model.
5. Curve (250)
Build streamlined or organic shapes using a rich palette of curved parts.
Parts that bend or rotate, allowing for a wide range of interesting building techniques.
7. Clip (100)
Clips can attach to other parts in this category such as a bar, handle, or lightsaber blade.
The classic LEGO Minifigure and Friends Minidoll live in a rich world of clothing, accessories, weapons, and containers.
Elemental forces, foliage, teeth, and tails bring the LEGO world to life.
Wheels allow your model to move, brackets make them stronger, noses make them look faster, and tracks give them somewhere to go.
Technic is a system unto itself, with a focus on connecting parts using pins and axles, but you will find plenty of Technic parts with studs as well.
Add light and motion to your creations using LEGO hubs, motors, lights, and sensors.
LEGO parts that don't fit very well in other categories.
The larger bricks for younger kids are twice as big in each direction and compatible with regular LEGO bricks