THE RANDOMNESS WORKSPACE

Randomness tools.

Random data for statistics , Monte Carlo simulations and research experiments.

No quotafree randomness generation

NUMBER GENERATOR

Sequences

FromTo

Number of terms Without replacementExport format

Binary preserves your sequence values. For randomness batteries , use Random byte file below or the full unsigned 32-bit range (0–4294967295) with replacement.

Random byte file

Size in MB · 1 MB = 1,000,000 bytes

PREVIEWReady to generate

✳

Your next sequence
starts here.

Estimated time: —

Preview shows up to 100 terms. The file contains the full sequence.

PIXEL GENERATOR

Bitmap

WidthHeight

Color

Up to 16,000 × 16,000.

Your image will appear here.

COIN FLIP

Coin flip

Heads or tails · 50 / 50

0 flips

Ready?

Flip history

GIVEAWAY PICKER

Unique winners.

Post URL

YouTube video URLs · no sign-in required.

Number of winners

WINNERS

No comments imported.

Random Noise

Duration (minutes)SoundPlayback volume

Up to 10 hours · WAV · mono · 22.05 kHz / 16-bit. Generated with KE32-R2-C64.

AUDIO PREVIEW

Generate a file to listen or download.

Randomness Lab

Choose file

TXT / JSON numbers , BMP pixels and WAV samples are prepared automatically. Compressed audio is decoded when your browser supports it.

Pack bounded integers into bits

Enable bit packing for TXT / CSV / JSON

Original minimumOriginal maximum

Enter the generator’s original range , not the smallest/largest observed value. Assumes independent uniform draws with replacement. Power-of-two ranges pack directly; other ranges discard some values. Tests assess the transformed bits , not the discarded values. Passing is never guaranteed.

Test suite

Runs on your device. Keep this page open while testing. Raw uniform bits only; population measurements need different statistical tests.

LIVE RESULTS 0 bytes

Choose a binary file.Estimated time: —

Checkpoints and anomalies appear here.

KEY EXPANSION

KE32-R2-C64

A pseudorandom generator with ten 32-bit words · 320-bit state · two rounds per update and a 64-bit counter. Randux seeds the state from the operating system and runs 20 warm-up updates.

Each step updates one cell in sequence using its neighbors. The output is the 32-bit word X₂.

For non-cryptographic applications. Cryptographic key and secure seed generation is not enabled.

C_{j} = (BASE + j \cdot INC) mod 2^{64}

T_{1} = high32 (C_{j}) T_{2} = low32 (C_{j})

L = W_{(i + 9) mod 10} R = W_{(i + 1) mod 10}

X_{1} = {ROTL}_{7} (((W_{i} + T_{1}) \oplus {ROTL}_{17} (R)) - {ROTL}_{17} (L))

X_{2} = {ROTL}_{7} (((X_{1} + T_{2}) \oplus {ROTL}_{17} (R)) - {ROTL}_{17} (L))

W_{i} \leftarrow X_{2} i \leftarrow (i + 1) mod 10

BASE = 0x2107D71C673A0DB8

INC = 0xE9A3BB516B48361D

Round additions and subtractions are modulo 2³². The odd INC gives the counter a 2⁶⁴ cycle · this does not prove the output period.

Panagiotis AndreadakisInventor · Creator of KE32-R2-C64 and RPC / Random Position Cipher

18 patents and applications , according to the creator.

Statistical evaluation

The creator reports successful PractRand · TestU01 / BigCrush · NIST SP 800-22 tests. Tests apply to specific versions and output streams and do not certify cryptographic security.

PractRand: 64 TB of randomness with zero anomalies , according to the creator.

Reference test…