Random Number
Pick fair random integers in any range — one number or a unique batch.
Why Use a Random Number Generator?
A random number generator (RNG) is one of the simplest and most useful fairness tools online. Teachers use it to pick student numbers, giveaway hosts draw ticket IDs, developers test edge cases, and game masters invent loot rolls — all without bias or spreadsheets.
Unlike a physical hat full of slips, a browser-based generator scales from a single coin-flip-style 0/1 choice to multi-number lottery draws with unique constraints.
What Makes This Generator Different
- Inclusive ranges: Pick any integers from −1,000,000,000 to 1,000,000,000
- Batch draws: Generate up to 100 numbers in one click
- Unique mode: Sample without replacement for raffles and PIN-style codes
- Presets: Instant setups for 1–10, 1–100, D6, 6/49 lottery, and more
- Private by design: Numbers are created in your browser with the Web Crypto API — nothing is uploaded
How Fair Is This Random Number Tool?
Many “random” widgets still rely on Math.random(), which is a predictable PRNG. Random Select uses crypto.getRandomValues() through a shared secure module so every integer in your range has a uniform chance.
When unique mode is on, numbers are sampled without replacement so the same value cannot appear twice in a single draw — ideal for lottery-style picks and classroom seat numbers.
Popular Ways to Use It
- Classrooms: Draw a random student number from 1–30
- Giveaways: Pick unique ticket numbers from a published range
- Games: Roll custom ranges that dice cannot express
- Security demos: Generate short PIN-style sequences (and remind users these are not for real passwords without additional entropy practices)
Tips
- Turn on Unique numbers only when duplicates would ruin fairness.
- Enable Sort ascending when you need a clean list for publishing winners.
- Use presets as starting points, then tweak min/max/count for your exact case.
How It Works
Choose Your Range
Set minimum and maximum values, or tap a preset like 1–100 or lottery 6/49.
Tune the Draw
Pick how many numbers you need and whether results must be unique.
Generate & Share
Click Generate to draw with Web Crypto fairness, then copy or share the result.
Popular Use Cases
Classroom Activities
Teachers use this for fair student selection, group assignments, and participation tracking.
Giveaways & Contests
Perfect for Instagram, YouTube, and social media prize draws with verifiable results.
Games & Entertainment
Add excitement to game nights, board games, and virtual gatherings.
