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Random Number Generator

Generate random numbers instantly with custom ranges

Click Generate to get your random number

How the Random Number Generator Works

Our random number generator uses your browser's cryptographic random number API to ensure true randomness. Unlike pseudo-random generators that follow predictable patterns, cryptographic randomness is suitable for security-sensitive applications and ensures every number has an equal chance of appearing.

Simply set your minimum and maximum values, choose how many numbers you need, and whether they should be unique. The generator handles the math and presents results with a satisfying slot-machine style animation.

How to Use

  1. Set your minimum and maximum values (or use a quick preset).
  2. Choose how many numbers you want to generate (1-20).
  3. Enable "No repeats" if you need unique numbers.
  4. Click Generate and watch the slot-machine animation.
  5. Copy or share your numbers as needed.
  6. Check your history to see recent generations.

Common Use Cases

Giveaways & Contests

Running a giveaway? Number your entries from 1 to the total count, then use the generator to pick winners. Enable "No repeats" to ensure each winner is unique. The cryptographic randomness guarantees fair selection.

Lottery Number Picks

Use the 1-49 lottery preset to generate your lucky numbers. Set the count to match your lottery format (typically 5-7 numbers) and enable "No repeats" for valid combinations.

Education & Classroom

Teachers use random numbers for calling on students, creating math problems, or assigning groups. The visual animation makes it engaging for students of all ages.

Games & Decision Making

From board game tie-breakers to deciding who pays for dinner, random numbers provide fair, unbiased results. The 1-10 preset is perfect for quick decisions.

Quick Presets Explained

  • 1-10: Perfect for quick decisions, rating scales, or small group selection.
  • 1-100: Percentile-style generation. Great for probability or percentage-based choices.
  • 1-1000: Large-scale giveaways, raffle tickets, or when you need bigger numbers.
  • Lottery (1-49): Standard lottery number range. Combine with "No repeats" for valid picks.
  • Coin (0-1): Binary choice. 0 or 1, like a digital coin flip.
  • Percentage: 0-100 range for probability-based decisions or random percentages.

Tips for Using the Generator

  • Document your process: For official giveaways, screen record the generation for transparency.
  • Use presets for speed: Quick presets save time for common ranges.
  • Check the history: Reference previous results if you need to verify or repeat.
  • Combine with other tools: Use our Name Picker for names instead of numbers.
  • Copy for records: The copy button formats results nicely for pasting into documents.

Frequently Asked Questions

Is this random number generator truly random?
Yes! We use cryptographically secure random number generation (crypto.getRandomValues) when available in your browser. Each number in your range has an equal probability of being selected.
Can I generate multiple numbers at once?
Yes. You can generate up to 20 random numbers simultaneously. Use the "How many numbers?" input to set the count. Perfect for lottery picks or choosing multiple winners.
What does "No repeats" do?
When enabled, each generated number will be unique. This is essential for lottery-style picks, giveaways, or when you need distinct values. Note: you can only generate as many unique numbers as your range allows.
What range can I use?
You can use any integer range. Set your minimum and maximum values, or use one of our quick presets like 1-10, 1-100, 1-1000, or lottery ranges (1-49).
Can I use this for giveaways?
Absolutely! Use the "No repeats" mode to pick multiple unique winners from a numbered list of entries. The cryptographic randomness ensures fair selection.
Does the generator store my numbers?
Numbers are only stored in your browser during the current session for the history feature. Your history clears when you refresh. We don't store any data on our servers.
Can I use negative numbers?
Yes! You can enter negative values for both minimum and maximum. The generator works with any integer range, including ranges that cross zero.
How is this different from dice rolling?
Dice are limited to specific faces (6, 20, etc.) while this generator works with any range. Use dice for tabletop games; use this for custom ranges, giveaways, or any number you can think of.