Dimension a floor plan
Open a DXF, set the scale, add dimensions, view at scale and print

You open the plan of a room from a DXF file, set the drawing scale, add two dimensions, see how it will look on paper and print it to scale.

1 · Open the DXF

From the open and save button, Open…, and choose the DXF file: here a room drawn in centimeters. Walls, door, furniture and the file's dimensions become Janvas objects, on a page as large as the drawing. See DXF.

The DXF plan open: the walls of the room, the door with its angle dimension, a circle with its radius and the 400 and 300 cm dimensions

2 · The scale

With nothing selected, in the Project panel: Unit says in which unit measurements are read — here cm, from the file —, Scale 1 : is the paper scale. Enter 50: the measurements do not change, what changes is how the drawing prints.

The Project panel with Unit cm and Scale 1 : 50, next to the plan

3 · A linear dimension

Take linear dimension from the toolbar: it has no letter. Click the first end of the wall and the second — snapping catches them —, then a third point, where the dimension line should fall. The dimension writes the number itself, in the project unit: here 170 cm. The third point also decides what kind of dimension it is: above or below the two points it measures horizontally, beside them vertically, in the central half aligned with them.

The new 170 cm linear dimension on the stretch of wall to the right of the door

4 · The radius

Take radius dimension: click the center of the arc — snapping finds it, center —, then a point on the arc. The text starts with R: here R 60 cm, the rounded corner of the room. If you later drag the ends of a dimension, the number updates itself.

The R 60 cm radius dimension on the rounded corner at the top right, selected, with the Segment panel

5 · View at scale

Right-click menu › View › View at scale: the screen shows the paper, at 96 pixels per inch, taking the scale into account. You see how large the room will be printed at 1:50.

The plan viewed at 1:50 scale: as small as it will be on paper, with the Project panel

6 · Print to scale

From the open and save button, Print low resolution… or Print high resolution…. The page prints on a sheet of its real size divided by the scale, with zero margins: this 540.54 × 394.14 cm page, at 1:50, fits on a 10.8 × 7.9 cm sheet. From the browser's dialog you can also save to PDF.

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