Random Number Generator
The most advanced free random number generator online — single numbers, ranges, multiple, unique, weighted, Gaussian, prime, sequences, dice, lottery, and coin flip. No sign-up. No limits. Instant results.
A Random Number Generator (RNG) is an essential computational tool that produces numbers lacking any predictable pattern. This tool uses JavaScript's cryptographically-seeded Math.random() engine supplemented with the browser's crypto.getRandomValues() for true entropy — making it suitable for games, statistics, security testing, education, and everyday use.
Unlike basic generators, this tool offers 10 exclusive advanced modes not found in typical premium paid tools, including Gaussian/normal distribution, weighted probability, prime-only generation, custom sequences, and live statistical analysis — all completely free.
Getting started takes just seconds. Follow these simple steps:
Choose a Mode
Click any tab at the top of the generator to select your desired generation mode.
Set Parameters
Enter your minimum, maximum, count, or other settings relevant to the selected mode.
Generate
Hit the Generate button. Results appear instantly with full statistics.
Copy or Share
Copy results to clipboard or share directly to WhatsApp, Facebook, Gmail, Telegram, and more.
View History
All your generated numbers are logged in the session history for easy reference.
These features are absent in most premium paid RNG tools online:
Gaussian / Normal Distribution
Generate numbers following a bell-curve distribution — perfect for statistics and simulations.
Weighted Probability Mode
Assign custom probabilities to number ranges, making some outcomes more likely than others.
Prime Numbers Only
Generate exclusively prime numbers within any range — unique to this tool.
Real-Time Statistical Analysis
See mean, median, mode, standard deviation and frequency instantly after every generation.
Guaranteed Unique Numbers
No duplicates ever — guaranteed unique set generation across any range.
Multi-Lottery Mode
Generate numbers for Powerball, EuroMillions, or custom lottery formats with a single click.
Multi-Dice Roller
Simulate 1–10 dice of any type (D4, D6, D8, D10, D12, D20) with animated rolling.
Sequence Shuffler
Generate a custom sequence and shuffle it using the Fisher-Yates algorithm.
Distribution Frequency Chart
Visual bar chart showing distribution of your generated numbers over multiple generations.
Animated Coin Flip
Flip a virtual coin with 3D animation — heads or tails with custom flip count tracking.
Lightning Fast
Generates numbers in microseconds with zero server requests.
Truly Random
Uses crypto-grade entropy for genuine randomness, not pseudo-random patterns.
100% Free Forever
No premium plan, no subscription, no hidden charges — ever.
Mobile-First Design
Fully optimized for all smartphones and tablet browsers.
No Tracking, No Ads
Zero data collected. Pure tool with no advertising interruptions.
Session History
All results are saved in the current session for easy comparison.
Easy Sharing
Share results on WhatsApp, Facebook, Gmail, Telegram with one tap.
No Limits
Generate millions of numbers, no rate limiting or usage cap.
Assign weights to each range. Higher weight = higher probability of selection.
Generates numbers following a normal (bell-curve) distribution. Most values cluster around the mean.
Generate random prime numbers within a specified range. Primes are verified using Miller–Rabin primality test logic.
This Random Number Generator is the most complete, fully featured, and truly free tool of its kind available online. Whether you're a student, researcher, game designer, developer, or just someone who needs a quick random number — this tool handles every scenario with precision and ease.
From simple single-number generation to advanced Gaussian distributions, weighted probabilities, prime number selection, lottery simulation, and real-time statistical analysis — no other free tool combines all these capabilities in one place. No account required, no watermarks, no usage limits, and no data collection.
Bookmark this page and share it with friends, colleagues, and students. This tool will continue to be updated with new features and remain free forever.
Need help, have a suggestion, or found a bug? Reach out directly: