2D to 3D Converter

Give a flat image real depth: brightness becomes height, outlines become solid shapes. Preview in 3D free and download an STL for 2 credits.

Style
Samples
3D previewSample
Loading 3D preview
Drag to rotate
60 mm
2 mm
Advanced settings
2 mm
Detail

Runs in your browser. Your image is never uploaded.

Next steps

More ways to add depth

Make a photo panel, see how AI 3D will work, or extrude a CAD outline.

How it works

How to convert 2D to 3D

  1. 1

    Add a 2D image

    Drop, paste or choose a logo, drawing or height map as PNG, JPG or WebP.

  2. 2

    Choose height or outline

    Relief turns brightness into height. Silhouette pushes the outline up to one thickness.

  3. 3

    Download the 3D model

    Save a binary STL in millimeters for 2 credits, ready for any slicer.

Example

From height map to terrain

A grayscale height map where white means high, built as a relief with Raise light areas instead turned on.

Grayscale terrain height map with bright peaks on a black background
Height mapWhite is high, black is low
Terrain relief made from a grayscale height map, on the build plate
Terrain relief3D preview from this converter
Features

Why use this 2D to 3D converter

Exact, predictable depth from a flat image, right in your browser.

Height from brightness

Relief reads each pixel's brightness as height, up to 16 mm above the base.

Outline extrusion

Silhouette pushes the shape up to one even thickness and keeps holes open.

Flip which tones rise

Turn on Raise light areas instead for height maps where white means high.

Sizes in millimeters

Set the longest side and read the width, depth, height, volume and grams of PLA.

AI 3D, opening soon

A full model with sides and a back will come from AI 3D. It is not live yet.

Private, free preview

Relief and silhouette run in your browser with no upload. Previews need no account.

Print settings

Settings for 2D to 3D

Starting points for art, height maps and outlines.

Relief height 1 to 3 mm for art

Logos and drawings read well in this range. Height maps can go far taller: the terrain sample uses 14 mm.

A 2 mm base

Keeps a relief flat and stiff on the bed. Large plaques can use 3 mm or more.

Fine detail for thin lines

Fine samples the image most densely, so thin strokes and small lettering stay sharp.

Cut-off near 0.50

The default keeps anything darker than mid gray. Lower it to drop faint marks.

Guide

2D to 3D guide

Where depth comes from, how outlines and AI differ, and the methods side by side.

Where the third dimension comes from

A 2D image stores a width, a height and a color for every pixel. Depth is simply not there, so every 2D to 3D converter has to supply it from somewhere: from a rule applied to the pixels, from the outline of a shape, or from a model that has learned what objects usually look like. Which source you choose decides what you get back.

The rule-based way is a height map. Each pixel's brightness becomes a height, so by default dark areas rise off a base plate as a relief, or become thicker plastic in a lithophane. The fox badge loaded above shows it: the dark fur becomes the raised part of the badge. It is exact and predictable. A grayscale terrain map, where brightness already means elevation, comes out as a faithful landscape. A photo of a face does not, because there brightness means lighting, not distance.

Outline extrusion and AI reconstruction

Outline extrusion ignores shading. Every pixel darker than the cut-off becomes solid, the rest is removed, and the shape is pushed up to one even thickness, the way a cookie cutter or a cake topper works. Holes stay open and edges are traced as smooth curves, so Silhouette mode suits logos, lettering and clean drawings far better than photos. Lower the cut-off to drop faint marks, or raise it to keep softer gray areas.

AI reconstruction is the only route to a complete object. A model trained on many 3D shapes predicts the sides and back your image never showed and outputs a mesh you can print as a figurine. The result is a plausible guess, not a measurement, so check thin parts in your slicer, and scale it to the size you want, since a single image carries no real-world scale. Our AI 3D mode is not live yet. When it opens, each model will cost 25 credits on Basic, 30 on Pro or 35 on Ultra.

The methods side by side

The three height map and outline methods run in your browser and export an STL sized in millimeters, 2 credits per download. Only AI 3D runs on a server, because it needs a large reconstruction model. Choose by the object you want to end up holding: a plaque, a lamp panel, a cut-out or a figurine.

  • Relief (height map)

    What you get
    Raised design on a solid plate
    Best for
    Logos, signs, terrain maps
    Needs AI?
    No
    Free preview?
    Yes
  • Lithophane (height map)

    What you get
    Thin panel that shows the image when backlit
    Best for
    Photos, portraits, pets
    Needs AI?
    No
    Free preview?
    Yes
  • Silhouette (outline)

    What you get
    Flat cut-out at one thickness
    Best for
    Cake toppers, stencils, name tags
    Needs AI?
    No
    Free preview?
    Yes
  • AI 3D (reconstruction)

    What you get
    Full model with sides and back
    Best for
    Figurines, toys, busts
    Needs AI?
    Yes
    Free preview?
    No, 25 to 35 credits (soon)
FAQ

2D to 3D questions

Answers about cost, how AI works, availability, photos and the best images.

How much does it cost to convert 2D to 3D?
Relief, lithophane and silhouette previews are free with no account. Each STL costs 2 credits, and new accounts get 10 free credits. The STL opens in Cura, PrusaSlicer, Bambu Studio or OrcaSlicer. A full model with sides and a back needs AI 3D, opening soon at 25 to 35 credits.
How does 2D to 3D AI work?
A model trained on large collections of 3D objects looks at your image and predicts the shape it most likely came from, including the parts out of view. It works best with one object, centered, on a plain background, shot from the front in even light. Hidden sides are inferred, so they may not match the real thing.
Is the AI 2D to 3D mode available now?
Not yet. You can open the AI 3D tab in the converter to see how it will work, but generation opens soon. When it does, each model will cost 25 credits on Basic, 30 on Pro or 35 on Ultra. Relief, lithophane and silhouette work today.
Why does my photo look strange as a relief?
A relief reads brightness as height, not distance. By default dark areas rise and light ones sink, so dark hair stands up and a pale cheek drops, whether or not they were closer to the camera. Use a lithophane for photos, and keep reliefs for logos, drawings and height maps.
What kind of 2D image converts best?
For relief and silhouette, high-contrast art with clean edges, such as a logo, a line drawing or a black-on-white sketch, about 1000 pixels wide. For a grayscale height map where white means high, turn on Raise light areas instead. For a lithophane, a well-lit photo.