Are LEGO And Mega Bloks Compatible? Here’s the Truth

LEGO and Mega Bloks are both popular for building fun, creative designs with plastic interlocking bricks.

Although LEGO sets tend to be more expensive, their bricks are generally smaller and built with higher-quality materials compared to Mega Bloks. LEGO bricks

Are LEGO and Mega Bloks Compatible?

Yes, LEGO bricks and Mega Bloks micro bricks are technically compatible — but with some exceptions.

The studs of LEGO bricks can connect with some Mega Bloks figures and pieces, but not all parts will fit properly. The reason is that their studs, holes, and elements aren’t always the same size. Standard LEGO bricks are considered more durable and of higher quality than Mega Bloks.

For example, Mega Bloks bars are slightly narrower, while LEGO bars are typically 3.18mm in diameter. This means:

  • Mega Construx elements may feel loose when placed on LEGO studs or clips.

  • LEGO bars may not fit securely into Mega Bloks parts.

While the bricks may snap together, LEGO’s studs have smaller holes and won’t always accept rods from Mega Bloks. Handles and wands also vary in thickness — a Mega Bloks handle might fit loosely in a LEGO stud, but not the other way around.

Even plates and tiles from both brands seem to connect, but LEGO elements placed on Mega Bloks will generally have a weaker grip.

Key Differences Between LEGO and Mega Bloks

Despite looking similar, LEGO and Mega Bloks have distinct differences:

  • Material Quality: LEGO bricks are made from sturdy ABS plastic, making them less likely to break. Mega Bloks use lower-quality plastic and can be more fragile.

  • Brand Markings: LEGO studs are clearly branded with the LEGO logo. Mega Bloks bricks usually don’t have any branding on their studs.

  • Fit and Durability: LEGO’s precision design means a tighter fit and better long-term durability during play or display.

Similarities Between LEGO and Mega Bloks

While they’re not identical, there are still some similarities:

  • Many LEGO and Mega Construx elements look alike in shape and function.

  • Their basic design allows limited cross-compatibility, especially among micro bricks.

  • Both are used to create models, sets, and custom designs — especially in licensed themes like Halo (Mega) and Star Wars (LEGO).