Random Number Between 1 and 1,000,000
One in a million — a fair pick from the full range
One in a million is the classic figurative phrase for "very unlikely" — and here you can literally pick from a million. This range is useful when you want a number that's almost certainly unique, or for probability demonstrations where small odds need to feel genuinely small.
Good uses
- Generating a near-unique ID for forms, tickets or test records
- Probability teaching — "what are the odds?" demonstrations
- Large-scale giveaways where hundreds of thousands entered
- Creating realistic-looking random numeric test data
- Picking a random frame from a million-frame video (fun, not practical)
Worth knowing
Even at 1-in-a-million odds, the same number can appear twice in a row — it's just very unlikely. For guaranteed uniqueness, use a UUID generator, not random integers. This tool is best for one-off picks and demonstrations.
Other ranges
Smaller draws: 1–1000, 1–100, 1–10. Need something custom? Use the full Random Number Generator.
Frequently Asked Questions
What are the odds of the same number appearing twice?
For two independent draws, the chance of the exact same result is one in one million. It's vanishingly rare but not impossible.
Is this suitable for generating unique IDs?
Only for small numbers of IDs. Due to the birthday paradox, you'll start seeing collisions after roughly 1,200 draws. For true uniqueness use UUIDs.
Why does the result take the same time as smaller ranges?
Random number generation is constant-time regardless of range size. Picking from one million is just as fast as picking from ten.