This form will do computations of dice odds. Simply enter a dice expression and hit the button.

Examples of dice expressions;

Comparison expressions will return two results - the 0 indicates failure chances, the 1 indicates successes.

Expression:
Disclaimer: I wrote this for my own use and the answers seem accurate to me. I do not offer any warranty whatsoever regarding the results obtained. Do not use these numbers in any operations in which you rely on them being accurate, particularly but not limited to any financial or life-critical scenarios. If you find any errors, please tell me about them. If you do calculations which involve really big numbers of dice, you can get results which are negative chances or >100% chances. This is because I'm using 64 bit integers to hold numerators/denominators in the fractions. These can overflow despite renormalisations. At some point I'll rewrite it to use proper bignums.