';
}
preShow();
function doInput(diin){
var frm = document.calform;
if (diin<1){
frm.lenrange.value = 1;
frm.lennumber.value = 1;
}else if (diin>100){
frm.lenrange.value = 100;
frm.lennumber.value = 100;
}else{
frm.lenrange.value = diin;
}
preShow();
}
function doSliding(dsin){
var frm = document.calform;
frm.lennumber.value = dsin;
preShow();
}
var dCounter = 0;
function delayAndShow(){
var rdAmt = parseInt(document.calform.lennumber.value);
if ((dCounter++)<30){
for (i=0; i
';
}
setTimeout(delayAndShow, 50);
}else{
var rSum = 0;
var rMultiple = 1;
for (i=0; i';
rSum += tempid;
rMultiple *= tempid;
}
if (rdAmt>1){
document.getElementById("summulti").innerHTML = 'Sum: '+rSum+'
Product: '+rMultiple;
}else{
document.getElementById("summulti").innerHTML = '';
}
}
}
function rollDice(){
dCounter = 0;
document.getElementById("summulti").innerHTML = '';
setTimeout(delayAndShow, 50);
return false;
}
Non-Conventional Dice Roller
Try out this online dice simulator to replicate dice with any number of sides beyond the standard six‑faced die. Traditional physical dice come in 4, 6, 8, 10, 12 and 20 sides, with six‑sided dice being the most prevalent. This tool lets you set an arbitrary number of faces and produces random results that emulate a roll according to the chosen sides and quantity.
Dice shapes
The most commonly used dice shapes are shown in the image, and listed below.
- Tetrahedron: 4 faces – the blue die
- Cube: 6 faces – the orange, cubic die
- Octahedron: 8 faces – the green die
- Pentagonal trapezohedron: 10 faces – the orange, non-cubic die
- Dodecahedron: 12 faces – the yellow die
- Icosahedron: 20 faces – the purple die
The picture shows the typical polyhedral dice, yet numerous other shapes exist, ranging from unusual polyhedra to non‑numeric or spherical dice that don’t follow the usual 1‑to‑N counting sequence.
How random is a dice?
In theory each face of a die should be equally likely to appear, but mass‑produced dice rarely achieve perfect randomness. Manufacturing tolerances and asymmetries cause deviations, especially in d20 and d8 polyhedral dice, making some results appear more often than others.
How to test how random your dice is:
Although it may not be the most accurate way to test how random your dice is, one relatively quick test you can do involves just a container, some water, and some salt:
- Get a container that can fit the die you want to test
- Fill the container with water, then add salt and the die to the water – if the die doesn't float, add more salt until the die floats
- Flick the die and take note of which side faces upwards – repeatedly flick the dice and record the results
A properly balanced die will yield a broad spread of results. When a die is off‑balance, certain numbers tend to show up more frequently. Detecting this bias generally requires many rolls; a lightly skewed die may not be noticeable in casual play.
Various manufacturers have been subjected to stricter testing to gauge the randomness of their dice, particularly d20s. Findings reveal that even dice from the same batch can differ markedly, and no set is truly random. Some brands performed better than others, yet true randomness remained elusive.
Digital dice, such as the one above, rely on pseudo‑random algorithms, which aren’t genuinely random either. Nevertheless, their output tends to approximate true randomness more closely than most physical dice.
