Random Number & Dice
Draws numbers from a range with or without repeats, rolls dice notation and flips coins.
For example, 4d6dl1 drops the lowest of four dice; 2d20kh1 keeps the highest of two (advantage). kl and dh do the opposite of each.
crypto.getRandomValues, the browser’s cryptographic generator, with the modulo bias removed by rejection sampling — so a d6 is a fair d6 rather than one that favours the low numbers. Nothing is sent anywhere, and no result is recorded.Feed it from
Lotto Number Picker
Picks number sets with exclusions and fixed numbers, and checks a saved set against past results.
Random Picker
Picks one or several entries from a pasted list, with weights and an optional spinning wheel.
Team Splitter
Splits a list of names into balanced teams by count or size, and can keep or separate given pairs.
Next
These accept what this tool produces, so the result can go straight in.
Lotto Number Picker
Picks number sets with exclusions and fixed numbers, and checks a saved set against past results.
Random Picker
Picks one or several entries from a pasted list, with weights and an optional spinning wheel.
Random Key Generator
Generates cryptographic random bytes as hex, Base64 or Base64URL at a chosen length, for app secrets.
Team Splitter
Splits a list of names into balanced teams by count or size, and can keep or separate given pairs.
Zodiac Compatibility (궁합)
Two birth dates give two animal signs and two day stems. Reports the exact relation between them — 삼합, 육합, 충, 원진, 형, 파, 해 — and the five-element relation of the day stems, each with the traditional verdict.
Audio Converter
Converts between MP3, WAV, FLAC, AAC, OGG and Opus with bitrate and sample-rate settings.