How to Scale a Sketch in SOLIDWORKS

You can scale sketch entities in SOLIDWORKS with the Scale Entities command. This changes the size of selected sketch geometry around a chosen point while keeping the sketch on the same plane.

Use Scale Entities

1. Edit the sketch that contains the geometry you want to resize.
2. Select the sketch entities, or start the command first and then select them.
3. Go to Tools > Sketch Tools > Scale.
4. Choose the point to scale about.
5. Enter the scale factor.
6. Confirm the command and rebuild the model.

A scale factor greater than 1 makes the sketch larger. A scale factor less than 1 makes it smaller. For example, 2 doubles the selected sketch geometry, while 0.5 reduces it to half size.

Choose the scale point carefully

The scale point controls where the geometry grows or shrinks from. If you scale around the origin, the sketch stays related to the origin. If you scale around a corner or center point, that location remains the anchor for the operation.

Before accepting the command, check the preview. The same scale factor can produce a very different result depending on the selected scale point.

Watch sketch relations

Scaling sketch entities can affect relations and dimensions. Some relations may remain valid, while others can make the sketch over-defined or prevent the scale from behaving as expected. If the command fails, temporarily remove conflicting dimensions or scale a copied version of the sketch.

After scaling, check whether the sketch is still fully defined. Add or repair dimensions so the model rebuilds reliably.

When not to scale a sketch

Do not use Scale Entities as a substitute for proper dimensions when the final size must be controlled precisely. For design intent, it is usually better to edit the driving dimensions directly. Scale Entities is best for imported geometry, layout changes, logos, profiles, and quick proportional resizing.

If the sketch drives an important feature, rebuild the part and confirm that downstream cuts, bosses, sweeps, or patterns still update correctly.