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How Do Weighted Dice Work? Learn How Loaded/Weighted Dice Work

how do weighted dice work

How do weighted dice work? Generally speaking, dice in general are small throwing objects with a marked side that can rest in several positions. Often, they are used to generate random numbers as part of board games, dice games, or chance games. The dice are usually thrown from the hand or from a specially designed container, such as a cup or tray. This uppermost side of the die is used to determine the value of the throw.

Some players can be tempted to cheat when playing games of chance with dice, such as craps. The most common way to cheat is to play with weighted dice, which are altered so that one side will appear more often than the other. The purpose of weighted dice is to favor some results over others while cheating or for entertainment. If you use dice without filled pips, the dice are “Weighted” to favor the sides with more pips due to their greater weight being removed. The faces with heavier weights are more likely to face down on an unevenly weighted die.

How Do Weighted Dice Work?

How Do Weighted Dice Work?


Cheating can be harder to detect with weighted dice. These dice can come in many different forms. You might drill out some spots on one face and fill the holes with a heavy substance to make the die land on this face. 

As the number six is always on the opposite side of the one, you are more likely to see the number six if you drill out the number one. Changing the shape of the die could also be used to load it, so it will be more likely to keep rolling. Although it only gives the cheat a slight advantage, it may be enough to tilt the game in his favor.

Based on tops and bottoms, one can easily determine the probability of different totals appearing. With weighted dice, no such odds exist. It is possible to calculate the probability of occurrence by rolling the dice several times (possibly thousands) and then determining what numbers appear and how often. When you know the probability that six appears is lower than it would be with fair dice, that would ultimately give you a cheat’s advantage.

Do Casino Dice Have a Weight?

Generally, the answer is no! Casino dice are among the most precisely machined and balanced in the world. There is no room for bias in casinos that could favor an informed customer. The dice at the craps tables are not crooked or weighted for specific reasons. 

Firstly, the odds, payouts, and house edge of each wager ensure that the house wins in the long run. If weighted dice were used, the game’s math would completely change. Additionally, casinos avoid using weighted dice because it could work against them. However, the weighted dice would cause certain numbers to land more frequently than they should if precision dice were used. Therefore, the math of the game and the house edge on each bet will be completely changed.

What is the Best Method for Detecting a Set of Weighted Dice?

You can use many tricks, such as putting a die in water and seeing how often it comes up. However, my recommendation is to just roll the dice 200 or so times and note how often each number appears. While it seems tedious, it shouldn’t take you more than a few minutes to complete. 

If the number is higher and more likely than the others, it should be weighted. Probability is a very difficult feat to articulate, and you need to keep this in mind. It may make non-weighted dice look weighted while a weighted die appears normal. The ideal situation is to repeat the experiment more than once, preferably even on different surfaces.

How are Most Dice Made?

Throughout history, dice have been forged from a variety of materials. These materials include bone pieces, glass, wood, seeds, metals, and seeds. However, plastic is more frequently used today than any other material for dice manufacture. When selecting a plastic for dice manufacturing, it must be impact-resistant, colorable, and heat-resistant. The plastic should also be clear, colorless, and transparent. The materials used to make dice are typically thermoset plastics.

To make the dice more appealing, colorants are added to the polymer, which makes up the bulk of the plastic. They can be dyes or pigments dissolved in water. Titanium dioxide is an organic material that can be used to produce white. There are also some inorganic materials such as iron oxides that can be used to create yellow, red, black, brown, and tan dice. Dyeing can also be done with organic dyes, such as pyrazolones and quinacridone violets.

Weighted Dice: Frequently Asked Questions

What is a weighted dice?

A weighted dice are altered so that they are more or less likely to land with a certain side facing upward than an ordinary die. Weighted dice can be made in several ways, including with rounded faces, off-square faces, and weights.

Does every dice have a weight?

Certainly not. Not every dice is weighted. The dice in casinos are some of the most precisely balanced and perfectly machined cubes ever created. There is no bias at the casinos that could favor knowledgeable patrons. Undoubtedly, sloppy production creates some bias. Due to drilled-out pips, unevenly rounded corners, etc., there might be slight weight differences. There is no advantage to using those dice since it would take a long time for these minute differences to be noticeable.

What is the Science of Making Casino Dice?

There is a very distinct science behind the making of dice used in casinos. Tolerances for federally mandated products are extremely tight, with the parts being machined rather than molded. Dice that are molded will never have the same distribution as dice that are precisely computer-driven. Rather than using actual holes, pips are made by drilling into the dice and then filling them with a color that is exactly the same density as the plastic of the dice. This ensures no difference in weight between either side of the dice.

How do you cheat by using a weighed die?

Whenever you roll the dice, the weight is on the opposite side of the number you want, so it’s on the bottom when the die lands. When loading a six-sided die, you would place a weight on the opposite side of the six so that it lands on the 6. Ideally, you should load the number 1, so you get one at the bottom and six at the top.

What is the purpose of drilling holes in dice?

Weighed dice increase a player’s chances of finding rarer items from various loot sources. Casino dice don’t just have painted pips; they’re also drilled. The side with six pips must weigh the same as the side with only one, so that’s why the holes in the die are filled with special paint.

What are some ways to make loaded dice?

One of the simplest ways to load a die is to drill a hole in the plastic and weigh one side to make that end land more often. In this case, choose which side of the debate you want to dominate most often and weigh the other side.



The use of transparent dice allows players to compete on an even playing field. If you were wondering how do weighted dice work, they basically are used to confuse, amaze, or conquer the game. When loading dice, the weight is added or subtracted in one or more sections to affect the likelihood of it landing in your desired position. When you change the weight distribution of a die, it will more often land on the side that you desire. Weighted dice can be fun whether you want to perform some magic tricks or dominate craps.

Mike Horton (head of Weighted Living)

by Mike Horton

Mike is one of the lead editors at Weighted Living and the author of this article. He's become fascinated with weighted products (a bit too much we think) and loves to see all the different ways they can improve our loves. He's written quite a few weighted product guides as well.

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