Random Number Generator
Pick a random number in any range.
Generate a random number between any min and max, instantly. Draw one number or a whole batch, with an optional no-repeats mode for raffles, giveaways, and quick decisions.
オプション
Generate a number をクリックすると結果が表示されます。
最近の結果
- 履歴はまだありません。
よくある質問
Is it truly random?
Yes. It draws from your browser's crypto.getRandomValues, which is unbiased across the full range you set.
Can I generate more than one number without repeats?
Yes. Turn on "no repeats" to draw unique numbers until the range runs out, then it tells you it's exhausted.
Does it work with negative numbers or large ranges?
Yes. Any minimum and maximum are supported, including negative numbers, up to safe integer limits.
関連ランダマイザー
Further reading
- Saving for one thing: how to run a savings challenge that isn't 52 weeks long
The 52-week savings challenge is famous, but a whole year is the wrong length for most real goals. Here's how to scale the same shuffled-deposit idea to a specific purchase, a shorter sprint, or a biweekly paycheck rhythm.
- Why a long streak in 100 coin flips doesn't mean it's rigged
Flip a batch of 100 coins and you'll almost always see a streak of five or more somewhere in the run. That's not a broken randomizer — it's exactly what real randomness looks like. Here's the math behind streak length, and why 'it's due' is the wrong instinct.
- Why the standard 52-week savings challenge secretly punishes December
The classic ascending 52-week chart backs its biggest, hardest deposits into the final weeks of the year — right when holiday spending peaks. Shuffling the same amounts into a random order keeps the total and the deposit count identical while spreading the hard weeks evenly across the year.
- The dice math a digital roller gets right (and a physical set hides)
A lost d6 or a remote D&D session is the obvious reason to roll dice online. The less obvious reason: seeing the actual math of 2d6 vs. 1d20, and how a flat modifier changes your odds more than most players expect.
- Assigning fair raffle ticket numbers with a random number generator
Naming a winner by name feels arbitrary; drawing a number out of a known range feels provable. Here's when to reach for a numeric random draw instead of a name-list picker, with worked examples for raffles, lotteries, and sampling.