Card Deck Probability Calculator - Online Poker & Draw
Calculate odds of drawing specific cards or poker hands from a standard deck. Learn combinations. Local math.
UD5 Toolkit
Master kanji strokes by guessing or ordering – fun, fast, and effective for JLPT and daily study.
How many strokes does this kanji have?
Drag & drop or use arrows to sort kanji by stroke count (low to high).
Calculate odds of drawing specific cards or poker hands from a standard deck. Learn combinations. Local math.
Compute probability for simple events, as well as permutations and combinations (nPr, nCr). Useful for statistics and game theory. Browser-based math.
Estimate make probability of a putt based on distance and skill rating. For disc golf enthusiasts. Fun statistical tool, no data upload.
Answer a series of deliberately confusing and trick questions. Lives system and funny wrong answers. Playful, no data stored.
Get a random tattoo concept with style and placement suggestion. For fun and inspiration only. Not real art.
Determine what score you need on your final exam to achieve your target overall grade. Enter current grade, weight, desired grade. Local only.
Random shapes appear; compute the area mentally. Multiple choice. For middle schoolers.
A collection of clean, family‑friendly riddles with a reveal‑on‑click answer. Random riddle each time. Perfect for break time.
Select a destination language and generate a printable mini phrasebook with essential greetings, directions, food, and emergency phrases. Local only.
Practice mental arithmetic with customizable operators and digit count. Timed rounds, score tracking. Works offline. Improve your brain speed.
Roll virtual dice with animated 3D spins. Choose any number and type. See total and individual results. Fun for games.
Enter two names and get a playful love compatibility percentage. Purely for entertainment! All calculation happens instantly in your browser.
Scroll through thousands of pre‑computed digits of π. Search for a specific string of digits. For math lovers.
Drag the seven tangram pieces to form a target silhouette. Multiple puzzles. Develop spatial thinking. All canvas interactions.
Solve random arithmetic problems under a time limit. Track your score and improve mental calculation. No data collected.
Type a number and see its full English word representation (e.g., 123 → one hundred twenty‑three). Supports large numbers.
Combine two random elements and get a surprising result. Inspired by Little Alchemy. Infinite ideas. All local.
Calculate the area of an irregular polygon by entering its vertex coordinates. Uses the shoelace formula. Pure math.
Convert a numeric amount into English words, perfect for writing checks or legal documents. Supports USD/GBP styles.
Divide a total bill among multiple people considering tax and service fees. See exactly who pays what.
Classic memory card game with emoji or color themes. Select grid size and try to find all pairs in minimum moves. Brain training fun.
Get a random heartfelt or funny birthday message to write in a card. Choose from various tones. Local.
Evaluate the Gamma function for real and complex inputs (real part). Extension of factorial. Academic mathematics tool.
Design circular string art by ticking nails and seeing simulated thread lines. Adjust number of nails and steps. Export pattern. Local only.
Generate printable math worksheets for addition, subtraction, multiplication, and division. Choose difficulty and number of problems. Answer key included.
Draw perfect ellipses by dragging focal points and a point on the curve. See the equation update dynamically. Educational.
Type a word to see all its homophones with definitions. Avoid embarrassing mistakes (their/there/they’re). Static dictionary.
Enter a first name and last name, plus a domain, to generate common email address patterns. For finding contacts.
Classic flip‑to‑match pairs game. Choose grid size and card theme. Tracks moves and time. All local.
Convert between digital storage units: bits, bytes, kilobytes, megabytes, gigabytes, and more. Binary and decimal interpretations available. A developer must-have.