“Standard” Wood Domino Dimensions

Wood dominos (walnut, cherry, hickory, maple)

For Christmas, I decided my daughter needed a bunch of dominos (not to play the game dominos, but to stand up and knock over). I always liked playing with dominos, but was always disappointed when I ran out, so I then decided it should be a big bunch of dominos. After doing a little on-line research, I quickly concluded that a purchase of a big bunch of dominos, even the cheap ones, was going to add up, and since I have a never-ending supply of domino stock in my shop, I set out to make them.

First things first, I needed to figure out the dimensions, and this ended up being the most difficult part of the entire job. I tried searching online, assuming there would be a standard size and I would just copy that, but I didn’t find anything standard. The sizes seemed to be all over the place. Then I thought, “OK, maybe there isn’t a standard size, but there must be some sort of standard ratio or proportions to a domino.” But, as far as I can tell there isn’t, or at least there isn’t anything clearly published that is quick and easy to find. There was nothing with the heading “Standard Domino Sizes,” like I was hoping to find.

Here’s the good news, after scouring the internet for information and making a few hundred myself, I have finally figured out the perfect proportions for what I am calling a standard domino. Now, it seems quite simple and very obvious, but it took me awhile to put it all together (we had to knock over a lot dominos for it to click). The dimension that took some time to nail down was the thickness.

At first, I just guessed at it and made the dominos a thickness that looked in proportion to the length and width. After using the dominos though, it seemed like they were a bit too thick. They look fine and don’t feel unlike a domino, but they don’t fall over very well. They still fall, but they are just a bit too stable and don’t fall with much force. They aren’t bad enough to throw away, but they could be better.

After playing with the dominos more and making structures with them, similar to building blocks, it all came into focus, and I found the magic ratio. When we stacked  the dominos in different orientations, things weren’t lining up and the thickness was to blame. We would stack some dominos on their side, some standing, and some laying down, and the ones laying down didn’t quite line up with the ones on their side. It was close, but not that close. Three dominos laying down were just a bit taller than just one on its side, which made them impossible to use as stable building structure. If they were just a bit thinner, everything would line up when they were stacked and they would topple just right.

So, here is the magic ratio, expressed in a three different ways:

Thickness = X, Width = 3X, Length = 6X

Width = X, Length = 2X, Thickness = X/3

or in actual (standard?) size

Length = 2″, Width = 1″, Thickness = .33″

Standard Domino Dimensions

Of course, if you are going to make your own dominos, they don’t have to be 1″ wide. They could be any dimension you want, but be sure to follow the above ratios for them to really work well.

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About wunderwoods

Hi! My name is Scott Wunder and I am the owner of WunderWoods Custom Woodworking. We build wine cellars, built-ins and furniture from local woods, here in St. Louis, MO. Recently, I finished a three-year term as the President of the St. Louis Woodworkers Guild, which had me writing a monthly article for our newsletter. I love to write, especially about wood, and found that I still had more to say. Every day I run into something wood related that I realize some of my customers don't know and this seems like a great forum for sharing what I have learned (instead of telling the same story to each person). The main thing to remember is that I try to keep it light and as my wife always reminds people that have just met me, "He is joking."

10 responses to ““Standard” Wood Domino Dimensions”

  1. Sarah Thomasson says :

    Outstanding. I love knowing the answer to a question I had not thought of. Happy new year, Sarah

    Sent from my iPad


  2. cperron13 says :

    Nice sketchup work!


  3. davidaion says :

    Thanks – I have granddaughters and this sounds like a great project.

  4. travismohrman says :

    Did you paint the dots on them or create a dimple in the wood? I’m thinking a dremel with a bur removal tool could quickly make a dimple that would be easily repeatable.

  5. wunderwoods says :

    No dots or dimples here. We just build ’em up and knock ’em down. I like the Dremel idea though, especially if mounted to a CNC router.

  6. Steve Lones says :

    Would your domino proportions hold up with larger size dominos, especially ones that are hollow and could contain something like bells that would make a sound when they fell.

    I have an autistic brother who loves dominos, and sound effects might add to his enjoyment, especially if there were variations in the sounds.

    • wunderwoods says :

      I think the proportions hold up no matter the size. Adding anything like bells could throw off the weight and balance, so I can’t give e definitive answer on that one. That will be trial and error on your part, I think.

  7. Anita says :


    I am making jewelry pendants and I would love to possibly get some of these. Would you ever consider selling them?


  8. Ben Clay says :

    Dear sir, thank you for the information. I have a large “Osmanthus” bush that I thought would be great pruned into a Large Domino ! ( a two, one Spot!). So that’s 2 metres high, 1m wide, 0.3m thick. Many thanks and regards Ben Clay.

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