Think in spaces.

You sketch. Fastplan builds.

Fastplan turns every line into a dimensioned floor plan and a live 3D model — while you draw.

Open Fastplan → See it

Free to use during the beta. No account, nothing to install.

House on the Slope Saved · 09:41
BuildFurnish
1F GF BS Roof Terr.
Schlafen23,3 m²Bad9,1 m²Küche7,7 m²Wohnen35,8 m²9,50
X-ray Roof
3DA-AB-B
AI
Exterior wall Ground floor · North 36,5cm 2,75m 9,50length Window Door 2 of 4
Live floor planWith real dimensions.
3D in real timeWhile you draw.
Natural drawingFinger, pen or mouse.
For early designWhile everything still moves.
Think in spaces Fast + calm Simple + precise Digital + analogue Professional + accessible

Draw the plan. See the space.

Every line has a spatial consequence. Fastplan shows it while you are still drawing.

01Scribble
02Floor plan
03Space

Architecture moves fast.

Fastplan keeps up.

Thought becomes lineNo detours.
Line becomes planDimensions and rooms, at once.
Plan becomes spaceIn real time.
Space becomes the next ideaThe loop stays open.

The software should disappear before the idea does.

One line, three states

One line. Many possibilities.

Early design means trying, comparing, changing your mind. That is exactly what Fastplan is built for.

01Sketch

Free and intuitive

Pull the wall the way you would on paper. Fastplan straightens and snaps while the stroke is still running.

02Plan
Schlafen23,3 m²Bad9,1 m²Küche7,7 m²Wohnen35,8 m²

Dimensioned and clean

The room closes and knows its area. Wall thicknesses sort themselves out: 36.5 outside, 11.5 inside.

03Space

Spatial and tangible

The same floor as a white model — your building as pure volume, without material.

Made for architecture

Precise when it counts. Invisible when it flows.

A white cardboard architectural model with a gable roof stands on a sheet of paper, lit from the side by daylight.
36.5 · 11.5Wall thickness outside and inside, in centimetres — automatic
DIN 18065The stair meets the standard without you looking it up
1:100 · 1:50Vector PDF, fully dimensioned — drawn, not rendered
DXF 1:1Five separate layers for whoever draws on

Substance

Light as a sketch.

Work freely — with real dimensions, real wall geometry and dimensioned plans. The number changes while you drag.

Dimension
The number is tappable. What you type is the stored value — not rounded.
Room
Closes by itself and knows its area. The same number in the panel, in the PDF and in the CSV.
Roof
Flat, gable, hip or shed. Your floor plan takes care of the rest.
White model
Your building as pure volume — so you see the form, not the surface.
4,25 3,60 5,85 m 36,5 AUSSENWAND
Two people sit at a wooden table with a tablet between them, both looking at it.

At the table

Built for the conversation.

Draw while you talk. Let the person across from you see the same spatial idea you do. Just turn the screen around.

Limits

Built for the beginning.

Fastplan covers the first minutes of an idea — not construction documentation. Detailing, MEP and BIM stay where they are today. The DXF goes straight into them.

This limit is a decision, not an omission. It is what keeps the tool fast.

—Not an interior plannerPretty pictures without a plan solve no spatial problem.
—No construction documentationAnd no MEP, no structural analysis.
—No BIMNo component data depth, no model server.
—No photorealismThe white model stays white.
—No layer systemsNothing to manage.
—Projects stay localYour backup is your manual export for now — sync is in the works.

Start with a single line.

Free during the beta. Nothing to install, no account — and your projects stay on your device.

Open Fastplan →