Random Number 1 to 38
Generate a random number from 1 to 38 — matching an American roulette wheel with its 38 pockets (0, 00, and 1-36). Use it to simulate spins, compare American and European odds, or make a fair pick from exactly 38 options.
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History
Common Uses
- ✓ American roulette number simulation (0-00 plus 1-36)
- ✓ Fair 38-option selection
- ✓ Casino probability lessons
- ✓ Random assignment in 38-slot scenarios
- ✓ Game night activities
Frequently Asked Questions
How is American roulette different from European?
The American wheel has 38 pockets — it adds a second zero (00) to the European 37-pocket layout. Each pocket therefore has a 1/38 (2.63%) chance, and the house edge rises from 2.70% to 5.26%.
How do I map numbers to the wheel?
Assign 1 → 0, 2 → 00, and 3 → 1 through 38 → 36. Because our generator uses cryptographic randomness with rejection sampling, every one of the 38 outcomes is exactly equally likely.
Can I type a custom count, like 6 numbers between 1 and 38 at once?
Yes — the "How many?" box accepts any count from 1 to 1,000 (type 6, 25, 500…), and the quick buttons fill common values. Turn on "No duplicates" when every number must be unique.
How many possible results are there in the 1 to 38 range?
Exactly 38 (counting both 1 and 38). Each has an identical 1-in-38 chance (2.63%) of appearing on every draw, independent of previous results.
Are my generated numbers stored or logged?
No. Numbers are generated locally in your browser with crypto.getRandomValues() and are never sent to, or stored on, any server. Click Clear or reload the page and they are gone.