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Random Number Generator

Generate truly random numbers with custom ranges, unique mode, decimal precision, smart presets, and live auto-generation. Crypto-secure & instant.

Crypto-Secure Bulk Generation Unique Mode
Range & Quantity
Define your number range
to
1
12550100
max 1000
Generation Options
Fine-tune your output
Unique Numbers Only No duplicates in output
Decimal Mode Generate decimal numbers
Precision:
decimal places
Sort Output Numbers in ascending order
Auto Generate Regenerate automatically
Every seconds
Click Generate to begin
?
Range: 1 – 100
🕐 Generation History (last 8)
No history yet

How to Use the Random Number Generator

1

Set Range

Enter your min and max values, or use a quick preset like Dice, Lottery, or Game.

2

Choose Options

Select quantity, enable unique mode to prevent duplicates, or toggle decimal mode for precision.

3

Generate

Click Generate or enable Auto-Generate for continuous rolling. Results animate instantly.

4

Export

Copy all numbers, download as TXT or CSV, or click any number to copy it individually.

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What Makes a Good Random Number Generator?

A true random number generator must be statistically unpredictable. Our tool uses the Web Cryptography API (crypto.getRandomValues()) — the same standard used in cryptography and security software — ensuring each number is genuinely random and not influenced by predictable patterns like those found in Math.random().

What is Unique Mode?

Unique mode ensures no duplicate numbers appear in your output. This is essential for lottery picks, drawing winners, creating shuffled lists, and any situation where repetition would invalidate the result. The tool uses a Fisher-Yates shuffle on a pool of all valid integers within your range.

Use Cases for Random Number Generation

Random number generators are used in board game dice rolls, lottery number selection, statistical sampling, classroom name pickers, A/B test group assignment, generating test data, creating random quiz questions, and game development. The auto-generate feature is particularly useful for live events and interactive presentations.