SketchUp Free

SketchUp Free is a web-based 3D modeling tool from Trimble that runs entirely in the browser. It uses an intuitive push/pull approach where you draw flat shapes and extrude them into 3D objects. The free version covers core modeling features, while the paid Pro and Studio editions add desktop software, advanced rendering, and file format support.

What it does

You start by drawing 2D shapes with the Line, Rectangle, Circle, or Arc tools. Click a flat surface and select the Push/Pull tool (or press P), then drag upward to turn that shape into a 3D solid. This single mechanic lets you build walls, furniture, boxes, and architectural forms quickly. For precise dimensions, select any drawing tool, click your starting point, and type the measurement (e.g. 3m, 150cm) on the keyboard before pressing Enter. The value appears in the Measurements box at the bottom right.

The 3D Warehouse, accessible from the left panel, contains millions of user-uploaded models. Search for "dining table" or "window frame" and insert it directly into your scene. This saves hours when furnishing a room or adding standard architectural components. For navigation, hold the middle mouse button to orbit, scroll to zoom, and Shift plus middle button to pan. Grouping objects (right-click > Make Group) keeps them from sticking to neighboring geometry, which is how SketchUp handles separate parts of a model.

Finished models can be downloaded as SKP files (native format), STL for 3D printing, or PNG screenshots. The free web version does not export to DWG or DXF, which are common in architecture and engineering workflows. That limitation pushes professional users toward the paid desktop edition.

Who it is for

I recommend SketchUp Free to anyone starting with 3D modeling, especially for home renovation projects, furniture design, or basic architectural visualization. The push/pull method makes it possible to create usable models within the first hour of learning. If your work requires CAD file exports or photorealistic rendering, you will eventually need the paid desktop version, but the free browser edition covers a surprising amount of ground for hobbyists and students.