Model land in 3D from a 2D site plan
Lan3D is terrain modelling software that runs in your browser. Draw the site once and get ground that slopes, contour maps you can read, cut-and-fill volumes you can quote, and renders you can send.
No install · Runs in the browser · Free plan for one site
From a plan to a photo in minutes
Draw the plan in 2D, Lan3D builds the 3D model, then renders it photorealistically.
From a blank plan to a costed site in three steps
- 01
Draw the site plan in 2D
Trace the outline with live dimensions, or lay a survey drawing underneath and trace over it at true scale. Snapping keeps corners honest.
- 02
Set altitudes and slopes
Give each area an altitude to the centimetre. The ground grades between them — tilt a plateau by angle, or from two measured altitudes.
- 03
Read volumes, contours and renders
Get cut-and-fill in cubic metres, a contour map, a cross-section under any line, and a photoreal image to send on.
Everything a site needs, in one drawing
Draw in 2D, read in 3D
Sketch the site plan with live dimensions. The plan becomes solid ground as you draw — no separate modelling step, no CAD training.
Ground that actually grades
Give areas an altitude and the terrain slopes between them. Tilt a plateau by angle, or from two measured altitudes, and check the grade anywhere.
Contour maps and cross-sections
Switch to a topographic contour view with labelled altitudes, or draw a line and read the ground profile beneath it.
Cut-and-fill volumes
Select an area and get the cut and fill in cubic metres — pond capacity, excavation spoil, the fill a level platform needs — or measure the whole design against the ground as it stands today.
Photorealistic renders
Frame a 3D view and turn it into a photoreal image that keeps your geometry, plants and materials. Renders are paid in credits, and each is kept with the version it came from.
Desktop, iPad and phone
Runs in the browser with Apple Pencil support, and syncs live — draw on the tablet, review on the desktop, and open the site on a phone to view it on the ground.
Start from a real address
Search an address to bring in the ground as it lies, draw the plot on the map, and trace over its satellite image.
Plants, fences and buildings
Place plants from a library that grow with their age, draw fences with posts, gates and a bill of materials, and generate a building's 3D model from its plans and photos.
Water that finds its level
Paint a pond and its level follows the ground. Drop a source and the stream runs downhill, fills each hollow and stops at a drain.
Free for one site. Paid plans when you need more.
Draw and grade one site for nothing, for as long as you like. When you need more, a paid plan adds it. The editor keeps improving, and your plan comes along with it.
Free
available nowThe plan every new account starts on. Edit it, or add paid plans alongside it.
250 MB of storage
Pro
coming soon5 GB of storage · 650 render credits a month
Studio
coming soon20 GB of storage · 2,200 render credits a month
Anyone who has to move ground and defend the number
Landscape and garden designers
Show a client the garden in 3D from the plan you were drawing anyway — levels, terraces, paths, planting and fences.
Groundworks and excavation
Price a dig before it starts. Cut-and-fill in cubic metres tells you the lorry loads, not a guess.
Pool, pond and water features
Model the basin, read its capacity in m³, and check how the surround sits against the existing ground.
Architects and self-builders
Set a house platform on a sloping plot, work out the retaining you need, and see it before anyone digs.
Surveyors and site engineers
Put measured levels on the plan and read back a contour map and cross-sections — on site, on a tablet.
Sports turf, paddocks and drainage
Grade a pitch, arena or field for fall and drainage, and confirm the levels hold along any line you draw.
What people ask before they start
- What is Lan3D?
- Lan3D is a 3D terrain and site-plan editor that runs in the browser. Draw the site in 2D with live dimensions, give each area an altitude, and the ground grades between them in 3D as you work. The same drawing gives you contour maps, cut-and-fill volumes in cubic metres, plants, fences and buildings on the ground, and photorealistic renders.
- Do I need to install any software?
- No. Lan3D runs in a modern browser on macOS, Windows and Linux, and on a tablet such as the iPad — there is nothing to download, licence or keep updated. A phone opens your sites for viewing. Your sites sync live across every device you sign in on, and the editor is in English, Lithuanian, German and Spanish.
- Can Lan3D calculate cut-and-fill volumes?
- Yes. Select an area and Lan3D reports the volume in cubic metres between that area and the ground the rest of the site forms beneath it. That is your pond or pool capacity, the spoil an excavation produces, or the fill a level platform needs.
- Can I generate a topographic contour map?
- Yes. Switch the plan to contour view and Lan3D traces minor and major contour lines with labelled altitudes straight from the terrain. Draw a line anywhere on the plan to graph the ground profile beneath it as a cross-section.
- Can I trace an existing survey or aerial photo?
- Yes. Drop a survey drawing, plot plan or aerial photo in as a reference image, calibrate it by drawing over one known distance, and trace the site outline on top of it at true scale. Or start a project from an address and use its satellite image as the reference.
- How precise are the altitudes?
- Altitudes are set to the centimetre. Tilt a plateau by an angle and a direction, or let Lan3D work the slope out for you from two measured altitudes, then check it against a cross-section or a spot height anywhere on the ground.
- Does it work on an iPad with Apple Pencil?
- Yes. Draw with the Pencil, pan and pinch with your fingers, and long-press for the radial menu. A plan drawn on the tablet on site shows up on the desktop live, so you can survey with the iPad and present from the laptop.
- Can I export the project to other software?
- Yes. Save the 2D plan and any 3D view as an image for a report, and on a paid plan export the geometry as an OBJ file for other 3D packages.
- What are credits for?
- Photorealistic renders and AI-generated building models are paid in credits; the rest of the editor is not. A new account receives welcome credits once it is let in, and you earn more for each person who joins with your invite link. Credit packs top the balance up and never expire; a paid plan adds credits every month, which expire with their month. The price is shown before a render starts, and a render that fails is refunded.
- Is there a free version?
- Yes. The free plan is for personal use on one site and gives you the full editor — drawing, grading, contours, cross-sections, volumes, plants and objects, version history and live sync — with no card, plus welcome credits to try photorealistic renders. During the alpha each new account is let in by the Lan3D team. The paid plans, their prices and what they add are on the pricing page.
Open the editor and draw something
One site on the free plan, no card. Bring a survey or start from a blank plot.