Grid Sizer is a workflow addon that adds dedicated buttons to the 3D Viewport header for precise grid control. Users can quickly double, halve, increment, or reset the grid scale directly from the interface or via custom hotkeys. It includes an option to display the current grid size on-screen, complete with automatic unit switching for metric and imperial systems.

In the addon preferences, you can customize the scaling steps, define minimum and maximum grid limits, and set the default reset scale. The tool also provides a synchronization feature, allowing users to choose whether grid changes affect all 3D Viewports simultaneously or apply only to the active viewport.