Dimensions and units

Type measurements the way you think about them. We store every length exactly, so switching units, saving and exporting never changes your plan.

Before you start

• Select a wall, room, opening or item so the inspector shows its dimensions.

Formats you can type

Bare numbers use your project's units: feet in an imperial project (12 → 12′) and millimetres in a metric project (3810 → 3810 mm). When the unit is inferred, the inspector shows a normalized preview — for example 12′ 6″ (3.810 m) — before you apply it, so you can catch mistakes.

Steps

1. Select the item and click a dimension field in the inspector.
2. Type a value in any format above.
3. Check the normalized preview, then press Enter to apply.
4. To change display units, use the units switch in the top bar. Nothing is converted or rounded in storage.

How accuracy works

Lengths are stored as whole micrometres (thousandths of a millimetre). One inch is exactly 25,400 µm, so imperial and metric values are both stored exactly. Labels on screen are rounded for display (to 1/16″ or 1 mm), but rounding never feeds back into the model. Exports and printing use the same stored values.

Areas

Rooms show net area (inside wall faces) by default. Gross area (to wall centrelines) is available in room details and schedules. The basis is always stated.

Common problems

• "12 6" was rejected. Two bare numbers are ambiguous. Type 12'6" or 12 ft 6 in.
• Negative numbers are rejected. Lengths can't be negative; to move something left or up, use the position fields or arrow keys.
• 1,200 mm became 1200 mm. A comma followed by three digits is treated as a thousands separator; a comma followed by one or two digits is a decimal comma.