Building with LEGO® and DUPLO® bricks

DUPLO® and LEGO® bricks are compatible, so you can use them together. There are some limitations, however. DUPLO® bricks fit best on larger LEGO® bricks and may come off easily from smaller LEGO® parts. DUPLO® figures aren't compatible with LEGO® bricks, and LEGO® minifigures won’t fit on DUPLO® bricks either.

LEGO® bricks will fit on DUPLO® parts as long as the DUPLO® ones have hollow studs on top. In case you’re wondering, the only DUPLO® parts that don’t have the hollow studs are baseplates. LEGO® plates also won’t fit on DUPLO® parts, and neither will LEGO® parts with an odd number of studs along one side. For example, a 2x2 or 2x4 brick will fit, but a 1x2 or 2x3 brick won’t.