UD5 Toolkit
Bayes' Theorem Updater – Online Simple Probability Tool
Enter prior, likelihood, and marginal to compute posterior probability. Intuitive sliders for learning.
Tag: Probability Calculator - Odds & Chance
18+ toolsNormal Distribution Calculator – PDF, CDF & Z Probabilities
Explore the normal distribution: compute probability density, cumulative probability, and tail probabilities for a given z-score or x value with interactive plot.
Coin Flip Streak Tracker – Visualize Randomness
Flip a virtual coin repeatedly and see the longest streak of heads or tails. Visualize how randomness can produce seemingly non‑random patterns.
Weighted Decision Coin Flip - Online Bias % Customizable
Flip a coin with adjustable bias (e.g., 70% heads). Used for random decision-making when you want to gently influence outcomes. History & stats shown.
Coin Toss Probability Demonstrator – Online Long‑Run Simulator
Virtual flip coins thousands of times and see the heads/tails ratio converge to 50%. Interactive law of large numbers.
Dice Probability Calculator - Online Sum Distribution & Odds
Calculate probability of getting a specific sum when rolling multiple dice. Visual bar chart. Useful for tabletop RPG players. Instant local computation.
Disc Golf Putting Probability Calculator - Online C1X/C2 Stats
Estimate make probability of a putt based on distance and skill rating. For disc golf enthusiasts. Fun statistical tool, no data upload.
Bernoulli Trial Calculator - Online Binomial Probability
Calculate the probability of exactly k successes in n independent Bernoulli trials. Step-by-step result. Local.
Coin Toss History & Statistics - Online Fairness Tracker
Flip a coin and track your full history. See percentage of heads/tails and longest streak. Pure RNG, no bias.
Hypergeometric Distribution Calculator - Online Sampler Probability
Calculate probability of k successes when sampling without replacement. Useful for quality control and card games.
Poisson Distribution Calculator - Online Event Occurrence Probability
Compute Poisson probabilities for a given mean rate. Ideal for call centers, traffic analysis. Instant chart.
Dice Roll Probability Calculator - Online Sum & Graph
Select the number and type of dice, then view the exact probability for each possible sum as a bar chart. Great for board game strategy. Local computation.
Card Deck Probability Calculator - Online Poker & Draw
Calculate odds of drawing specific cards or poker hands from a standard deck. Learn combinations. Local math.
Dice Roll Simulator & Stats - Online Massive Roll Trials
Roll any number of dice thousands of times and see a live bar chart of the sum distribution. Great for game designers.
Probability Calculator - Online Odds & Combinatorics Tool
Compute probability for simple events, as well as permutations and combinations (nPr, nCr). Useful for statistics and game theory. Browser-based math.
RPG Dice Roll Analyzer – Online Probability of 4d6 Drop Lowest
Simulates 4d6 drop lowest many times and shows average stat array. Character creation helper.
Dice Probability Heatmap - Online Visual Stat Calculator
Visualize the probability distribution of dice rolls as a color‑coded heatmap. For any NdM combination. RPG strategist's dream.
Bayes' Theorem Calculator - Online Probability Update Tool
Easily compute posterior probabilities given prior, likelihood, and marginal likelihood. Visual diagram. All local.