10 Services from probability-calc.x402tookit.com

Calculates poker hand probabilities (5-card and 7-card), outs-to-river odds, and blackjack natural odds via configurable modes.

Computes expected value, variance, standard deviation, and probability of profit for a discrete set of payoff/probability pairs.

Returns exact PMF, cumulative (CDF), and upper-tail probability tables for geometric, negative binomial, hypergeometric, binomial, and Poisson distributions.

Calculates the probability of going broke before reaching a target bankroll, and the expected number of bets, for repeated unit-bet gambling scenarios.

Computes posterior probability from a prior, sensitivity, and false-positive rate using Bayes' theorem, with natural frequencies and odds form output.

Computes exact probability distributions, target sum chances, mean, and variance for dice pools including drop-lowest mechanics like 4d6dl1.

Calculates the probability of getting a run of r consecutive identical outcomes somewhere within n independent trials (e.g. coin flips).

Computes jackpot odds and every match-tier probability for pick-k-of-N lottery games with an optional bonus pool (e.g. Powerball, EuroMillions).

Computes the multinomial coefficient (number of arrangements of items with repeats, e.g. MISSISSIPPI) and optionally the multinomial probability given outcome probabilities.

Calculates birthday problem probabilities: chance any two people in a group share a birthday, chance someone shares your birthday, and group sizes needed for 50% or 99% probability thresholds.