Uploading & scaling drawings

Supported file formats

You can upload:

• PDF — exported directly from CAD software, or a scan of a paper drawing.
• PNG, JPG and WebP — scanned or photographed drawings.
• ZIP — an archive containing several PDFs or images, uploaded in one go.

Each file can be up to 20 MB.

You can upload a floor plan for each storey of the building, plus elevation drawings for any side of the building you have (see Floors & elevations). Elevations let individual floors, doors and windows take on their real heights instead of default values.

Setting the scale

Every drawing needs a scale so that real-world distances (wall lengths, room areas, storey heights) can be calculated correctly. There are a few ways to set it, available from the Scale panel for each drawing:

Automatic

Detected automatically from the drawing where possible (for example, from a scale bar or text found in the PDF). Always double check the result against a known dimension before continuing.

Reference line

Draw a line over any element of known length in the drawing (for example a wall or a door opening) and enter its real-world length. The scale is calculated from the pixel length of the line you drew.

Reference area

Draw a rectangle over a room or area of known size and enter its real-world area. Useful when you know a floor area from a schedule but don't have a clean single dimension to measure against.

Known ratio

If the drawing states its scale directly (for example 1:100), enter that ratio and the unit directly — no measuring required. Only available for PDF uploads.

Default heights

Where a drawing (or its matching elevation) doesn't specify a height, these defaults are used and can be overridden per floor plan:

• Storey height: 3.0 m
• Door height: 2.1 m
• Window height: 1.6 m, starting 0.8 m above the floor