# Random Number Generator

> Random number generator: pick random integers or decimals in any range, with or without duplicates, for draws, games, sampling. Free, runs in your browser.

- **Canonical URL:** https://boringtoolskit.com/random-number-generator/
- **Category:** Everyday Calculators
- **Evidence level:** authored-methodology
- **Reviewed:** July 26, 2026
- **Last verified:** 2026-09-20
- **Privacy:** Inputs and results stay in this browser unless the page clearly labels an external request.

## Common questions

### What is a random number generator?

A random number generator is a tool that produces unpredictable numbers within a range you choose, using mathematical algorithms to ensure each number has an equal chance of appearing.

### Do I need to create an account or sign up?

No, this random number generator runs entirely in your browser with no signup, no registration, and no data stored on any server.

### Is the random number generator truly random?

It uses a pseudo-random algorithm, which is statistically unpredictable and fair for everyday use, but it is not suitable for cryptographic or security-critical purposes.

## Sources

- [Calculation methodology](/methodology/)
- [Quality evidence and verification standard](/quality-evidence/)

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