📐 Math

🎲 Random Number Generator

Generate truly random numbers in any range. Perfect for games, raffles, decisions, passwords, teaching, and anything that needs a fair random choice!

✏️ Enter Your Values
✨ Your Result
Result
🦉Owl's Explanation
🎲
Fill in the values on the left
and click Calculate! ✨

🤔 How Does This Tool Work?

Our Random Number Generator creates random integers (whole numbers) within your specified range using your browser's built-in random number function:

Formula: Random number = Math.floor(Math.random() × (Max − Min + 1)) + Min

For example, for a range of 1 to 10:

  • Math.random() generates a decimal between 0 and 1 (e.g., 0.743)
  • Multiply by (10 − 1 + 1) = 10: gives 7.43
  • Math.floor rounds down to 7
  • Add Min (1): result = 8

Each number in your range has exactly an equal probability of being selected, making it genuinely fair and random. Click Calculate as many times as you like for new random numbers!

❓ FAQ
Are the numbers truly random?
Our generator uses your browser's built-in cryptographic random number function (Math.random()), which is designed to produce unpredictable, fair results. It is suitable for games, raffles, and decision-making.
Can I use this for a lottery or raffle?
Yes! Set your minimum to 1 and maximum to the total number of participants or tickets, then generate your winning numbers. For example, for a 50-person raffle: min 1, max 50, generate 1 number.
Can I generate numbers without repeats?
Our current version may generate the same number more than once when generating multiple numbers. If you need unique numbers (like for a raffle draw), just click Calculate again if you see a repeat.
What is the probability of getting any specific number?
Each number in your range has exactly an equal probability: 1 ÷ (Max − Min + 1). For example, rolling a dice (1-6): each number has a 1/6 = 16.67% chance of appearing.
Can I generate random numbers for passwords?
Our random number generator creates numbers. For random passwords with letters and symbols, use our Password Generator tool — it is specially designed for creating secure passwords!