Free Online Random Number Generator

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The Best Free Random Number Generator

Whether you are running an online giveaway, picking lottery numbers, choosing a random student in a classroom, or deciding who has to take out the trash, true randomness is critical. The GadgetsFocus free online Random Number Generator (RNG) allows you to instantly pick a number between any custom range.

How to Use the Number Generator

  1. Set the Minimum: Enter the lowest possible number in the “Min” box (default is 1).
  2. Set the Maximum: Enter the highest possible number in the “Max” box (default is 100).
  3. Generate: Click the giant green GENERATE button. Your result will instantly appear in the blue box above!

You can generate as many numbers as you like. The tool keeps a running “History” of the last 20 numbers generated so you don’t lose track of the previous winners.

Is this Generator Truly Random?

Yes. Many cheap online calculators use the basic Math.random() function, which is famously predictable and can be manipulated. Our tool uses the window.crypto.getRandomValues() API.

This means the calculator taps directly into your device’s hardware (like CPU temperature fluctuations and keystroke timing) to seed a cryptographically secure random number. This guarantees 100% fair and unbiased results for your giveaways and lotteries.