Mister Blocks

LEGO brick scanner · free · in your browser

The LEGO scanner app that builds for you.

Scan your LEGO pieces with one photo. Mister Blocks finds every brick, plate and wheel, lists them by size and colour, and designs models you can build from exactly that pile. Nothing to install.

See the first build →

Tip: pieces flat on white paper, studs up, not touching. A finished model works too.

A car, a robot, a character, a building: Mister Blocks researches it and designs it in real pieces with step-by-step instructions. About 3–6 minutes.

Live 3D · a real kid's build Drag · scroll
Chain Van

Instructions · page 1

Three steps. Real bricks.

  1. Snap your pieces

    One photo of the pile, spread out on paper. Wheels, plates and odd bits all count.

  2. Get four builds

    A car, a work truck, something that isn't a vehicle, and something that flies. With 3D steps.

  3. Build, then chat

    Send a photo of what you made, or say what doesn't fit. Mister Blocks fixes the model.

How to scan your LEGO pieces

Spread the pieces on white paper, studs up, not touching each other, in good light. Take one photo from above with your phone, right on this page.

The scanner lists what it found by size, kind and colour. If it miscounted something, tell it in the chat and it corrects the list before designing.

What the scan gives you

A parts list of your pile, and four models designed only from those pieces, each with 3D step-by-step instructions and a check that every stud holds. Pieces hidden under others are counted too.

LEGO MOCs by category

Questions

Do I need to download an app?

No. The LEGO scanner works in the browser on any phone, tablet or computer. Open misterblocks.com and take the photo.

Does it sort my LEGO?

No, it doesn't sort physical bricks. It counts what is in the photo and tells you what you can build with it.

Is it free?

Yes, scanning and every build are free.

Before you see it

Every model passes a real-brick test.

  • Studs into holesEach piece sits on studs of the one below. Nothing floats, nothing is glued.
  • Wheels spin freeTires never touch the body. Learned from a kid's truck that wouldn't roll.
  • Only your piecesBuilt from what's in your photo, every piece used once.

The gallery

Latest builds

Every picture is the real 3D model. Open one to turn it around and follow the steps. See all builds →

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See all builds and building guides →