Can I set a specific seed for reproducible results?

The tool generates new randomness on each run for true unpredictability. If you need reproducible sequences, use a deterministic pseudo-random generator with a fixed seed.

What is the difference between pick and shuffle in list mode?

Pick selects one or more items from the list without removing them. Shuffle rearranges all items into a random order, like dealing a deck of cards.

Why does the distribution chart look uneven with few results?

Randomness is statistical, not deterministic in small samples. You need hundreds or thousands of results for the distribution to approach uniform. Unevenness in small samples is normal and expected.

Can I use this to pick lottery numbers?

Yes. Set the range to your lottery's limits and generate the required count. The numbers will be as fair as any official random draw.

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Random Generator

Name: Random Generator
Author: Zilita Team

Generate random UUIDs, numbers, names

Beginner3 min read

Introduction

Random Generator produces random numbers, choices, lists, and strings with configurable ranges and distributions. It supports integers, decimals, shuffled arrays, and weighted selections.

What the Tool Does

Choose a generator type (number, list, string, or dice), configure the parameters, and get cryptographically random results. The tool uses the browser's crypto API for secure randomness and displays the distribution of results over multiple runs.

Why It Is Useful

Fair random selection is harder than it sounds. Human-picked 'random' numbers cluster around 7 and avoid repeats. A proper random generator is essential for raffles, simulations, testing, and any situation where bias must be eliminated.

Who Should Use It

Teachers

running classroom lotteries, group assignments, and randomized quizzes

Developers

generating test data for applications under development

Researchers

conducting sampling and randomization in studies

Event Organizers

drawing winners from participant pools

Features

Integer generator with configurable min and max bounds
Decimal generator with specified precision
List randomizer (shuffle) and picker (single or multiple selection)
String generator with character set options (alphanumeric, numeric, hex)
Distribution chart showing frequency of results over many generations

How to Use It

Select the generator type from the tabs: Number, List, String, or Dice.
Configure the parameters — for numbers, set min and max; for lists, enter the items; for strings, set length and character set.
Click generate and the result appears instantly with a copy button.
For statistical use, click generate multiple times and observe the distribution chart to verify randomness.

Practical Examples

Splitting Students into Groups

A math teacher needs to split a class of 35 students into 7 groups. Entering the 35 names into the list randomizer and picking 5 per group creates unbiased teams in seconds.

Generating Test Email Addresses

A developer testing a booking system needs 100 random email addresses. The string generator set to 10 characters with alphanumeric mode produces unique identifiers that look realistic enough for testing.

Benefits

Cryptographically secure randomness eliminates the patterns humans introduce when picking randomly
The distribution chart provides visual proof that results are not biased toward any range
Multiple generator types cover common use cases without needing separate tools
Instant results with no setup or configuration beyond basic parameters

Tips

For classroom use, generate one extra result in case a student is absent on the day of the draw
Use the distribution chart to verify randomness — over 100+ generations, bars should be roughly even
The dice generator is useful for tabletop games when physical dice are not available

Frequently Asked Questions

The tool uses the browser's crypto.getRandomValues() API, which provides cryptographically secure randomness suitable for security-sensitive applications like password generation.

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About the Author

Zilita Team

Privacy-First Productivity & AI Experts

The Zilita Team builds privacy-first browser tools that help teachers, students, developers, businesses, and creators work more efficiently without sacrificing data privacy.

42 articles publishedLast updated: July 2026

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