Take the 2-minute tour ×
LEGO® Answers is a question and answer site for LEGO® and building block enthusiasts. It's 100% free, no registration required.

What are the real world dimensions of bricks? (starting with 1x1 brick) Plates? Studs? Does LEGO think of this in metric or imperial units or something else?

share|improve this question

4 Answers 4

This image from Brickipedia should sum it up nicely:

A plate is exactly one third of a brick in height (3.2 mm as in the diagram). In other words, 3 plates stack to match the height of a brick. This is useful to know if you're short on a certain size of brick, but have enough plates of the same shape and color to cover it in height.

share|improve this answer

This image shows the dimentions in LEGO Units. 1 Lego Unit is 1.6mm (the thickness of the plastic). In those units the stud's diameter is 3 (= 4.8mm).

enter image description here

share|improve this answer
5  
+1 for Lego Unit is 1.6mm - thats the important part, everything else is based on this. –  oezi Oct 28 '11 at 6:03

While LEGO uses metric nowadays, you may be interested to know that the bricks they originally copied (and bought the patent for later on) were made in the UK and thus probably used imperial measurements (although dimensions are not specified in the original patent). You may want to search for UK patent 529580 or Kiddicraft to learn more about this. There may still be remnants of that English heritage buried deep in the LEGO legacy.

Also, when LEGO started, I'm not sure what their measurements or tolerance were at the time, but they probably weren't as strict as they are now, which may account for some oddities in the system. For example, the distance between studs has been measured as 7.986mm rather than an exact 8mm.

share|improve this answer
1  
I found this synopsis goes a lot further than what was generally known after the Tyco trial. There is even a thesis written on the topic. –  Erik Olson Oct 28 '11 at 8:02

Robert Cailliau has summarized how dimensions of LEGO bricks derive from:

  • The base measure 0.8mm (that's where the 1.6mm already mentioned derives from)
  • The play measures 0.1mm (for additional space between pieces)
  • The height of studs 1.8mm

It looks like the number as the same as given in other sources, but there is disagreement about the height of a stud. I've seen the value 1.8mm (Robert), 1.7mm (Wikipedia) and 1.6mm (answers given here). Maybe the difference is because of the "LEGO" logo on top of a stud.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.