Random Number Generator vs RANDOM.ORG
Both generate random numbers in a range for free with no account. RANDOM.ORG is famous for atmospheric-noise (true) randomness from its servers; Gera Tools generates locally using the browser's cryptographic RNG.
For a public, audited or signed draw, RANDOM.ORG's true-random server is the right tool. For a quick, private random number that never leaves your device, Gera Tools uses the browser's cryptographic RNG.
Side-by-side comparison
| Feature | Random Number Generator Gera Tools | RANDOM.ORG random.org |
|---|---|---|
| Price | ✓ Free, no paywall | ✓ Free |
| Account required | ✓ No account, ever | ✓ No account needed to use the core tool |
| Processing location | ✓ 100% in your browser — input never uploaded | — Not guaranteed client-side; treat pasted/uploaded data as leaving your machine unless the tool states otherwise |
| Usage limit | ✓ No daily/size cap (limited only by your device memory) | ✓ No hard documented cap for the basic free action |
| Randomness source | ✓ Browser crypto RNG (crypto.getRandomValues) — runs on your device | ✓ Atmospheric-noise true randomness, generated on RANDOM.ORG's servers |
| Ads | ✓ Light, single ad slot; never blocks the tool | ✓ Ad-supported free tier |
| Works offline after load | ✓ Yes — keeps working with no network | ≈ Depends on implementation |
Comparison based on each tool's publicly stated, free-tier behaviour at the time of writing. RANDOM.ORG is a trademark of its respective owner; we link to it for fairness and do not claim affiliation. Where RANDOM.ORG is genuinely stronger, the table says so.
FAQ
Is Gera's RNG cryptographically strong?
It uses the browser's crypto.getRandomValues, which is a cryptographically strong pseudo-random source.
Does anything leave my device?
No. Gera Tools generates the number locally; nothing is sent to a server.
When should I use RANDOM.ORG instead?
When you need verifiable, server-side true randomness for a public draw or competition — RANDOM.ORG can sign and publish results.