5 Generation Modes
- Random Integer: A whole number within your specified min/max range. Set both endpoints and generate 1–100 at a time.
- Random Float: A decimal number within the range, shown to 4 decimal places. Useful for simulations and probability work.
- Dice Roll (1–6): Simulates a standard 6-sided die. Generate multiple dice at once for board games or D&D.
- Coin Flip (H/T): Generates Heads or Tails. Generate multiple flips to test probability.
- UUID v4: Generates a cryptographically random 128-bit universally unique identifier in standard format (xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx). Used in software development for unique IDs.
True Random vs Pseudorandom
Our generator uses window.crypto.getRandomValues() — the browser's cryptographically secure pseudorandom number generator (CSPRNG). This is seeded from OS-level entropy sources (hardware events, timing, etc.) and is suitable for security applications. It is not a true physical random number generator but is statistically indistinguishable from one for all practical purposes.
💡 For lottery numbers, board games, statistical sampling, random assignment in research, or any application requiring unpredictability — this generator is appropriate and secure.
Common Use Cases
- Pick lottery or raffle winners fairly
- Generate test data for software development
- Random sampling for research and surveys
- Decide outcomes in games without physical dice
- Generate unique IDs (UUIDs) for database records
- Create random passwords (use our Password Generator for this)
🎲 Generate random numbers, dice rolls, coins or UUIDs instantly
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