乱数生成器

The Random Number Generator creates truly unpredictable random numbers, names, or sequences. We use cryptographically secure randomization (crypto.getRandomValues) when available, ensuring fair and unbiased results for games, drawings, and decisions.

Random Number Generation

Enter a minimum and maximum value to generate a random integer within that range, inclusive. Perfect for dice rolling, lottery number selection, or any situation requiring random selection.

Common Use Cases

• Games: Dice rolling, card drawing, turn order
• Raffles: Fair winner selection from numbered tickets
• Classroom: Random student selection
• Decisions: When you can't choose, let fate decide
• Testing: Generate random test data

Is It Really Random?

Yes! We use the Web Crypto API's getRandomValues() function, which provides cryptographically strong random numbers. This is the same level of randomization used for security applications.

Related Calculators

Calculate probabilities with our probability calculator. For statistical analysis, use our standard deviation calculator or mean median mode calculator.