Random Number Generator
Generate random numbers instantly with custom ranges, quantities, and decimal precision. Perfect for games, testing, and statistical simulations.
Number Configuration
Options
Generated Numbers
Why use our Random Number Generator?
Custom Range
Set any minimum and maximum — from dice rolls to lottery-scale ranges.
Unique or Duplicate
Generate unique numbers within a range or allow repeats.
Integer & Decimal
Produce whole numbers or decimal values with configurable precision.
What is a Random Number Generator?
A random number generator produces unpredictable numeric values within a specified range. Teachers, developers, researchers, and gamers use random number generators for simulations, lottery draws, statistical sampling, dice rolls, and test data creation.
Our free online random number generator lets you set min/max range, quantity, decimal places, and uniqueness constraints. Uses cryptographically secure randomness for fair, unbiased results. Generate, copy, or download instantly in your browser.
Generation Options
- Min & max range:Set any integer or decimal range for your random values.
- Quantity:Generate one number or hundreds in a single batch.
- Unique mode:Ensure no duplicate numbers within the specified range.
- Decimal support:Include decimal values with configurable decimal places.
- Secure randomness:Cryptographically secure generation for fair results.
- Copy & download:Export number lists to clipboard or a .txt file.
Common Use Cases
Lottery & Raffle Draws
Pick random winning numbers within a defined range.
Dice & Game Mechanics
Simulate dice rolls, card draws, and board game randomness.
Statistical Sampling
Generate random samples for surveys and research studies.
Test Data Creation
Produce random numeric IDs and values for development and QA.
Classroom Math
Demonstrate probability and randomness concepts with live examples.
Contest Winner Selection
Pick random entry numbers for fair giveaway results.
How to Generate Random Numbers
Set Min & Max
Enter the minimum and maximum values for your range.
Choose Quantity
Set how many random numbers to generate.
Configure Options
Toggle unique mode and decimal places if needed.
Generate & Export
Click Generate, then copy or download the number list.
Benefits of Secure Random Numbers
Truly Random
Cryptographically secure generation — not predictable patterns.
Flexible Ranges
Any min/max from single digits to millions.
Unique Constraint
Guarantee no duplicates when picking from a finite range.
Decimal Precision
Control decimal places for scientific and financial simulations.
Private & Local
Numbers are generated in your browser — never uploaded.
Completely Free
Generate unlimited random numbers with no account required.
Random Number Tips
- •Unique needs enough range: Cannot generate more unique integers than exist in the min–max range.
- •Decimals reduce unique slots: Unique decimal mode has finite slots based on range and precision.
- •Use for fair draws: Secure randomness ensures no bias in contest and lottery picks.
- •Negative ranges work: Set negative min values for temperature or coordinate simulations.
- •Download for records: Save generated numbers for audit trails in contests.
- •Pair with random choice: Use our random choice generator to pick items from a named list.
Generate Random Numbers Now
Whether you are running a raffle, simulating dice rolls, or creating test data, our free random number generator produces secure, unbiased values instantly in your browser.
Scroll up, set your range and options, and generate. No registration required, completely free, and your results stay 100% private on Quick Note.
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Frequently Asked Questions
How do I generate a random number?
Set your minimum and maximum values, choose quantity, and click Generate. Random numbers appear instantly in the output area.
Can I generate unique numbers?
Yes. Disable duplicates to ensure every number in the batch is unique within your specified range.
Does it support decimal numbers?
Yes. Enable decimal mode and set the number of decimal places for fractional random values.
Is the randomness truly random?
Yes. The generator uses cryptographically secure random values for unbiased, unpredictable results.
What happens if I request more unique numbers than the range allows?
The tool alerts you when the requested quantity exceeds the number of unique values possible in the range.
Is my data uploaded to a server?
No. All generation happens entirely in your browser.
Can I download the numbers?
Yes. Click Download to save the list as a plain .txt file.
Is the random number generator free?
Yes. It is completely free to use with no registration, downloads, or hidden fees.