Some rooms are quicker to draw than to describe. A hallway that widens, an attic with a cut corner, a shop floor with a bay — you can split them into rectangles and add them up, or you can walk the outline once and let the shape speak for itself.
Every corner lands on the grid, on a corner you have already put down, or on a straight line from the last one, so a plan drawn with a thumb still has walls that meet. The wall you have drawn is counted as you go, and the moment you come back to the first corner the room closes and the area is there.
You never have to drag anything. The table under the drawing is the same plan in numbers: type
12 into a wall and that wall becomes twelve feet, keeping the direction you drew it in, and set
which way it runs from the same row. A room can be built there from nothing — 14 ft right, 9 ft
down, 14 ft left, close — and every corner on the drawing can be reached with the Tab key and moved
with the arrow keys, a grid square at a time or a tenth of one with Shift. That is the whole editor
for anybody who cannot drag a handle, and the faster way to correct a tape reading for everybody
else.
Already have a plan on paper or in a listing? Trace it from the image instead: mark one known length to set the scale, walk the outline, and the room arrives here.
A staircase, a kitchen island or a chimney breast can be drawn where it actually stands: switch to Cut out and walk its outline inside the room. A cutout may sit flush against a wall — that is where a closet goes — but it cannot cross one, and two of them cannot cover the same floor, because that floor would be taken off the total twice. Both are checked as you draw, and the drawing goes to the calculator with its corners, not just with an area.
When the room is closed, it opens in the calculator as a room like any other: it can be costed, sent to the flooring or paint estimator, shared as a link, printed, or saved as a project.