How to Check the Balance of Your D20s


Is that die unlucky or is it physically unbalanced – here’s a quick test to find out.

YouTuber and D&D fan Daniel Fisher wanted to convince a friend that his dice were not out to get him, so he came up with a quick balance test.

For more weighty dice…

This doesn’t mean, however, that you shouldn’t gather all of your dice and make them watch you smash the bad one with a hammer to show them that they need to roll properly. /I’ve never done that, ever…


How do you handle unbalanced, naughty dice?

  • Champildhir

    I have to check my X-wing dice then… XD

  • Horus84cmd

    You’ll find any dice used for table-top games and the like never roll fair. This will always be the case unless you purchase casino quality dice, which are insanely expensive and as far as know not sold as D20 or to joe public in the first place.

    • CMAngelos

      People with Casino Dice in wargaming should be forced to roll on the floor or another table. Those things are heavy sharp Mini Murdering hate-boxes.

    • Divergent_Reality

      Even casino dice roll 19% ones. Fair dice are almost impossible to mass produce.

      • Horus84cmd

        I’m not sure where you’ve source that figure but casino dice are crazy engineered to roll as evenly as possible – even down to using specially weighted paint for the pips and coated in a lacquer to ensure smooth rolling on the felt. A 1/6 chance is 16.6% odds. So if what you quote is right then they aren’t far off. However, I suspect the actual odds are a lot closer to the true value if the dice are brand new and have not been handled by dirty and grimy hands that will throw the odds off – one of the reason the dice are rotated a lot to be sent off to be cleaned.

        • Divergent_Reality
          • Horus84cmd

            Cool! Interesting stuff. I suppose casino dice do lose their fairness very fast!

            It would be interesting to find out if casino dice rolled by a robot (so they could loaded the same, thrown with the same force etc.. every time) would smooth out the 2.4% variation off the ideal.

          • Divergent_Reality

            The problem with that scenario is that you would have the same result after every roll. If the robot is loaded the same and throws with identical force and rotations every time, there would be no variations leaving no other results.

          • Horus84cmd

            That’s the point. You use the robot to make certain variables set and constant to see if you get the same result each time. You’d have to repeat the experiment to check each other face. You’ll then be able to scientifically quantify if the dice is fair.

  • Hawt Dawg

    Luckily my spiked d20 days are behind me.

    Oh, how many PCs I have killed “fair and square”…

  • Davor Mackovic

    About using a hammer, I was going to take my dice, put them in a semi circle infront of the microwave while they watch the “unlucky” dice to their fate.

    Only reason I never done this yet is I don’t want the wife yelling at me to clean it up afterwards lol. Not sure what would happen if I actually tried this lol.

    • Morgrim

      It’ll be boring, they won’t explode or dramatically melt or anything like that. Unless they’re metal dice, in which case the dice will be fine but murder your microwave.

      However many hard plastics can release toxic fumes when heated, so you WILL have to thoroughly scrub the microwave afterwards.

      • Davor Mackovic

        Thanks for the reply, greatly appreciated. Will not try this at all then. After all don’t want the dice laughing at me for failing to melt them lol.

    • Unless your microwave has a “split your own atoms” setting, it’ll be a lot less dramatic than you’d think.

      The hammer is best. For greatest effect, stick the offending die in the freezer overnight first.

      • Davor Mackovic

        Will keep that in mind. 😛

  • Horus84cmd

    Ha yeah exactly. It would at least be interesting and funny to see casino dice mowing do miniatures.