Random data instrument
Random, verified.
Numbers, lists, passwords, dice, cards and dates from a secure entropy pool. Every result is tested for bias, graphed and explained.
- Cryptographically secure
- Bias-tested every draw
- 18 languages
The instruments
Generators
Random Integer Generator
Whole numbers in any range, with optional no-repeat sets, sorting and binary, octal or hex output.
02NumbersRandom Decimal Generator
Uniform decimal fractions between two bounds with up to 14 decimal places.
03ListsRandom Sequence Generator
Every number in a range exactly once, in a random order.
04ListsList Randomizer & Picker
Shuffle a list, draw winners from it, or split it into fair groups and teams.
05GamesDice Roller
Roll up to 1,000 dice with any number of sides: d4, d6, d20, d100 and custom.
06GamesCoin Flipper
Flip one coin or thousands, with heads and tails counts and the longest streak.
07SecurityPassword Generator
Strong passwords with your choice of letters, digits and symbols, with an entropy estimate.
08SecurityRandom String Generator
Random strings, tokens and codes from letters, digits, hex or your own characters.
09NumbersRandom Date & Time Generator
Random dates, timestamps or times of day between any two dates.
10GamesLottery Number Generator
Quick picks for 6/49, Powerball, EuroMillions and custom draws, with bonus balls and a safe-set mode.
11GamesCard Deck Shuffler
Shuffle one to eight decks and deal any number of cards, jokers optional.
12NumbersStatistical Distribution Generator
Samples from normal, uniform, exponential, Poisson and binomial distributions, with a live histogram.
Beyond random.
Lab modules
AI Context Generator
Describe a situation in plain words and get random data that fits it: classroom picks, safe lottery sets, team splits, audit samples.
OriginalFairness Lab
Paste any list of numbers and test it for bias with chi-square, runs, serial-correlation and Kolmogorov–Smirnov tests.
OriginalBulk Generator
Generate thousands to millions of random numbers, strings, passwords or dates at once and download them as CSV, JSON or TXT.
OriginalGeneration History
Your chronological log of random results, with pattern alerts and export.
Where the randomness comes from
Each request draws from an entropy pool that mixes the operating system's cryptographically secure generator with high-resolution timer jitter, then expands it through an HMAC-DRBG. Ranges use rejection sampling, so no value is favoured.
Checked on every draw
The JEV fairness engine runs chi-square, runs, serial-correlation and Kolmogorov–Smirnov tests on each result and scores it from 0 to 100. If a result fails at a strict threshold, it is redrawn from fresh entropy.
Private by design
Results are generated on our server and stored only in your own history. Lists you paste are never shared or used for anything else.