True Random Number Generator

Yes. Download our desktop companion or connect to supported hardware devices for Windows. The web tool mirrors the same entropy source when run in Edge or Chrome.

We use the Web Crypto API, which accesses hardware-based entropy sources (like thermal noise, mouse movements, or dedicated RNG chips) rather than algorithmic pseudo-randomness. This provides cryptographic-quality unpredictability.

Web Crypto API is supported on all modern browsers (Chrome, Firefox, Safari, Edge) on desktop and mobile. If unavailable, the tool automatically falls back to pseudo-random generation with a clear notification.

Yes. Switch on the supplemental entropy toggle to capture mouse movement, touch gestures, or device motion. We blend it with hardware sources and show the resulting entropy score in real time.

True random uses physical entropy (hardware randomness), making outputs unpredictable even with perfect knowledge. Pseudo-random uses algorithms that appear random but are deterministic and reproducible given the seed.

Follow the DIY guide in the documentation—combine inexpensive hardware noise sensors with our open-source firmware, then feed numbers into this interface for visual verification.

Yes, when using Web Crypto API source, numbers are cryptographically secure and suitable for encryption keys, tokens, and security applications. The pseudo-random fallback is NOT suitable for cryptography.

Latency shows how long generation took in milliseconds. True random may be slightly slower than pseudo-random due to hardware entropy collection, but typically under 10ms for reasonable quantities.

Fallback occurs if Web Crypto API is unavailable (very old browsers, certain privacy modes, or non-secure HTTP contexts). We notify you and clearly label the source in results.

We maintain a vetted list of USB and PCIe entropy modules. Purchase links and setup instructions appear in the resources section.

Yes, up to 1,000 numbers per generation. For even larger quantities, run multiple generations. Each call accesses fresh entropy from hardware sources.

It supplies unpredictable keys, seeds, and salts. Compliance frameworks often require hardware entropy or certified services to ensure no attacker can predict outputs.

For casual use, pseudo-random is sufficient. True randomness is overkill for lottery picks but provides peace of mind that no patterns exist. For game development or audited systems, true randomness is best.

Yes. Use the Lottery preset toggle, which pipes results from the true random source and logs the entropy mode for audit trails.

Install the Android PWA or native companion listed in the mobile guide. Both surface hardware-backed entropy and label the source in the UI.

Never. All generation happens client-side in your browser. No numbers, settings, or results are transmitted to or stored on our servers. Your entropy is completely private.

Use our Statistical Analysis tool to run chi-square, Kolmogorov-Smirnov, and runs tests on generated numbers. True random should consistently pass all tests with large sample sizes.

Enable Comparison Mode to generate parallel sequences. Visual charts and statistical summaries highlight how each source behaves so you can explain the differences to teams or students.