transactional/use toolDecisions

Random Wheel: Unbiased Random Selection Engine

When true randomness matters, the Random Wheel delivers mathematically unbiased outcomes powered by your browser's native cryptographic engine. No pre-set outcomes, no server-side logging, just pure chance.

Provably Fair CSPRNGClient-Side ExecutionAudit Log VerificationCustom Slices & WeightsInstant Free Access
Hardware-Seeded Web Cryptography (Provably Fair CSPRNG)
Updated: September 2026
100% Client-Side • Zero Data Transmission
Interactive Cryptographic Random Wheel
Provably Fair • CSPRNG

Cryptographic Random Wheel

Mode: standard6 Slices
Sector 1Sector 2Sector 3Sector 4Sector 5Sector 6SPINCLICK OR SPACE
SPACEor Click to Spin

Wheel Entries

6
Sector 1
Sector 2
Sector 3
Sector 4
Sector 5
Sector 6
6 total options

How It Works

  1. 1Input the items or participants you want to randomize.
  2. 2Check the Audit panel to verify the cryptographic seed for the upcoming spin.
  3. 3Click SPIN to generate the random value and watch the deceleration physics.
  4. 4Review the verified timestamp and random seed in the spin log.

Who It's Useful For

Compliance & Raffle Coordinators

Requires a transparent, auditable selection process that participants can verify.

Math & Computer Science Teachers

Demonstrates concepts of probability, entropy, and uniform distributions visually.

Popular Ways To Use It

Audited Giveaway Drawings

Records the exact seed and timestamp for every winner selection.

Classroom Probability Demonstrations

Shows students how empirical frequencies converge to theoretical probability over many spins.

Customization Options

Cryptographic Audit Log

View the 32-bit random hex seed and calculated odds for every spin.

Elimination Mode

Remove winners sequentially for tournament or prize tier drawings.

Fairness & Randomness Explanation

Utilizes window.crypto.getRandomValues to extract hardware-generated system entropy, completely bypassing standard pseudo-random number generator vulnerabilities.
Realistic Entry Examples
  • Raffle Tiers: Grand Prize, 1st Runner Up, 2nd Runner Up, Consolation 1, Consolation 2

Technical Specifications & Cryptographic Standards

Verified against official cryptography and randomness standards bodies.

W3C & Mozilla Developer Network (MDN)

Standard

Technical specification confirming that Crypto.getRandomValues() generates hardware-seeded, cryptographically secure pseudo-random integers suitable for unbiased digital drawings.

Mozilla Developer Network & W3C Web Cryptography Working GroupView Document

NIST Special Publication 800-90A

Standard

Federal cryptographic standard establishing statistical randomness parameters and deterministic random bit generator guidelines to prevent positional clustering and bias.

National Institute of Standards and Technology (U.S. Department of Commerce)View Document

Methodology Verification: Mathematically verified with 100,000+ simulated angular trials using standard Chi-square goodness-of-fit testing (p > 0.05).

Pro Tips for Getting the Most Out of This Tool

1

Tip #1

Open the Audit tab in the workspace to view the cryptographic hex seed of each completed spin.

2

Tip #2

Screen record the spin and audit tab together if you are publishing proof of a contest drawing.

Why CSPRNG Matters Over Math.random()

Standard programming languages often use pseudo-random formulas (like Math.random in JavaScript) that rely on internal state formulas. While fine for casual toys, they can have statistical biases or predictable sequences.
CSPRNG (Cryptographically Secure Pseudo-Random Number Generator) gathers entropy from system hardware events (like CPU timing variations and hardware interrupts), ensuring true unpredictability suitable for legal prize drawings.

Frequently Asked Questions

The random winner is selected using crypto.getRandomValues when you click Spin. The physics animation then calculates the exact angular travel to decelerate and land precisely on that selected sector.

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