No account needed
Build more from the bricks you already own
Add the LEGO® sets you own and instantly see which other sets you can build, what parts you are missing, and whether it is cheaper to build than to buy.
A universe of building possibilities
0sets to build
0unique parts
∞combinations to explore
How it works
Add your sets
Tell us the LEGO sets you already own. Search by name or set number.
See the overlap
We compare your bricks against every set and rank what you can build.
Build or buy
See missing parts, a build plan, and how much you would save vs buying.