以下のガイドはまだ日本語に翻訳されていないため、英語で表示しています。計算機自体はすべて日本語に対応しています。
この計算機の使い方
- Enter the minimum and maximum (both included).
- Choose how many numbers and whether they must be unique.
- Choose integers or decimals, then press Generate.
計算式
Numbers come from the browser's cryptographically secure generator. Rejection sampling ensures every integer in the range is exactly equally likely, and unique draws use a Fisher–Yates shuffle.
P(any integer in [min, max]) = 1 / (max − min + 1)
よくある質問
Are the numbers truly random?
They come from your operating system's cryptographic random source, which is suitable for security purposes and far better than typical pseudo-random functions.
How do I pick lottery numbers?
Set the range (e.g. 1 to 49), the count (e.g. 6) and keep 'no repeats' ticked. Every combination is equally likely.
Can I use this for a giveaway?
Yes. Number the entries and draw the needed number of unique winners. For transparency, record your screen or have a witness.