Random Number Generator

Random number generator 1 to 100 no repeats — pick fair random numbers for draws and games. Use the free Random Number Generator below — enter your values and get instant results, right in your browser. Logic: each number is drawn uniformly from [min, max] inclusive using cryptographic randomness, so every integer in the range has exactly 1/(max−min+1) probability per draw. Draws are independent.

How to use the Random Number Generator

Lucky draws, classroom quizzes, giveaway winners, game numbers — whenever you need a number nobody can predict, this random number generator 1 to 100 delivers. Set any range and how many numbers you want, and get cryptographically random results instantly. Tip for no repeats: keep the count small relative to the range and regenerate if a duplicate appears, since each draw is independent.

  1. Set Min and Max to your range — 1 to 100 is the default.
  2. Set Count to how many numbers you need.
  3. Click the Generate button.
  4. Read your random numbers, each between min and max inclusive.
  5. Every draw is unique — the No repeats option is on, so no number appears twice in one draw.

Formula

Logic: each number is drawn uniformly from [min, max] inclusive using cryptographic randomness, so every integer in the range has exactly 1/(max−min+1) probability per draw. Draws are independent.

Worked example

Class quiz: set Min 1, Max 30, Count 3 for three random roll numbers. Click Generate — "7, 19, 23". Those three students answer first. Regenerate for the next round; the history keeps the last 8 draws. Every draw is independent and uniform, so each number in the range has an exactly equal chance.

Frequently asked questions

Yes — the No repeats option is switched on, so each draw picks unique numbers with no duplicates, like drawing names from a hat.

Yes — cryptographic randomness means no predictable pattern, making it suitable for casual draws and games.

Any min/max you type works, from 1–6 for dice-like draws up to ranges in the millions.

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