Random Number Generator is a 100% free, browser-based utility that enables you to random integers or decimals in a range, dice and coin flips. Unlike traditional cloud converters, all processing executes locally on your device with zero server uploads, delivering immediate results and ironclad data privacy.
About the Random Number Generator
Generate one or many random numbers in any range, including negative numbers. Choose unique numbers for raffles and lottery-style draws, sort the results, or switch to decimal mode with a set number of decimal places.
Numbers come from your browser's cryptographically secure random generator (crypto.getRandomValues) with rejection sampling, so every value in the range is equally likely, with no modulo bias.
How to use the Random Number Generator
- Enter the minimum and maximum values.
- Choose how many numbers and the options you need.
- Press Generate, or use the dice and coin buttons for quick results.
Features
- Any range, negatives allowed
- Unique numbers option
- Decimal mode
- Dice & coin flip
Why Choose In-Browser Random Number Generator vs Cloud Converters?
| Feature | Toolora (In-Browser) | Traditional Cloud Tools |
|---|---|---|
| Data Privacy | 100% Private (Files stay on device) | Uploaded to remote servers |
| File Size Limits | Unlimited (Limited only by your RAM) | Restricted (e.g. 10MB–50MB caps) |
| Processing Speed | Instant (Zero upload/download delay) | Slow upload & queue waiting |
| Ads & Popups | Clean, distraction-free | Heavy banner & interstitial ads |
Frequently asked questions
Are the numbers truly random?
They come from the Web Crypto API, a cryptographically secure pseudo-random generator seeded by your operating system, which is suitable for draws, games and sampling.
Are the minimum and maximum included?
Yes. In integer mode both the minimum and maximum values can be drawn.
Why do I get an error with unique numbers?
You asked for more unique numbers than exist in the range. For example, there are only 10 unique integers from 1 to 10.