Do Generator

Free Online Tools for Australia AU

Do Generator Australia provides free online tools built for Australian users. Generate random numbers, QR codes, barcodes, and secure passwords with Australian English spelling, four-digit postcode formatting, and designs that work across all states and territories including regional areas.

True Random Number Generator

Generator Settings

Maximum: 10,000 numbers

Advanced Options

Generated Numbers

0

Ready to Generate

Configure your parameters and click "Generate Random Numbers" to get started.

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About True Random Number Generator

Our true random number generator uses cryptographically secure Web Crypto API to generate genuinely unpredictable random numbers. Unlike pseudo-random number generators (PRNGs) that use mathematical algorithms, our tool leverages your browser's built-in cryptographic entropy source for true randomness.

Key Features

  • 01 Cryptographically secure true random generation using Web Crypto API
  • 02 Customizable range (any integer values)
  • 03 Generate up to 10,000 true random numbers at once
  • 04 Option to allow or prevent duplicates
  • 05 Automatic statistics calculation

Use Cases

  • 01 Gaming and lottery number selection requiring true randomness
  • 02 Scientific research and statistical sampling
  • 03 Decision making and unbiased random selection
  • 04 Secure password and cryptographic token generation
  • 05 Statistical analysis and testing with genuine randomness

How It Works

Our true random number generator uses the Web Crypto API's crypto.getRandomValues() method, which provides cryptographically strong random values directly from your browser's entropy pool. Unlike pseudo-random generators (PRNGs) that use deterministic algorithms, our tool generates truly unpredictable numbers suitable for cryptography, security applications, and any scenario requiring genuine randomness.

The generator supports both inclusive and exclusive ranges, handles negative numbers, and provides options to prevent duplicates when generating multiple numbers. All calculations are performed client-side using your device's hardware entropy sources for maximum privacy and cryptographic security.

Privacy Notice: All true random number generation happens locally in your browser using Web Crypto API. No data is sent to our servers, ensuring complete privacy and cryptographic security of your generated numbers.

Edge cases worth knowing

  • Min = max collapses the range to a single value — every result is identical. Fine as a constant placeholder, useless as randomness.
  • Negative ranges (e.g. -100 to -1) are fully supported — sum, average, median and sorting all stay correctly signed.
  • Asking for more unique numbers than the range holds is mathematically impossible (pigeonhole principle) — the generator tells you to widen the range or allow duplicates.
  • Excel silently converts long numbers to scientific notation when opening a CSV — import the column as text, or use the JSON export to preserve exact values.

Random Number Generator FAQ

Are these numbers truly random?

Yes. The tool calls the Web Crypto API's crypto.getRandomValues(), which draws cryptographically strong values from your system's entropy pool. Algorithms like Math.random() are pseudo-random and predictable, which makes them unsuitable for security work.

Can I use negative numbers or very large ranges?

Yes. The minimum and maximum accept any integers, including negatives, and you can generate up to 10,000 numbers at once.

What do "Allow duplicates" and "Sort results" mean?

With "Allow duplicates" off, the same number never appears twice, so the quantity cannot exceed the range size. "Sort results" arranges the output from smallest to largest.

Is any data uploaded to a server?

No. Every calculation runs locally in your browser, and the tool keeps working even offline.

References & Resources