Random Number Generator
Set your range on the right, then click Generate
History
No generations yet. Click GENERATE! to start.
Settings
Effects
About This Random Number Generator
This tool generates random integers using crypto.getRandomValues() —
the Web Cryptography API built into every modern browser. Unlike tools that rely on
Math.random() (a pseudorandom number generator seeded from the system clock),
this generator produces cryptographic-quality randomness indistinguishable from true randomness.
It uses a rejection-sampling approach to eliminate modulo bias — the subtle statistical skew that occurs when the random pool doesn't divide evenly into the target range. Every integer in your chosen range has an exactly equal probability of being selected.
Common Uses
Lottery Numbers
Pick 6 numbers from 1–49 or 1–70 for Powerball. Enable No Duplicates for genuine lottery simulation.
Dice Rolls
Use the 1–6 preset for dice. Or set 1–20 for D&D-style rolls. Roll multiple times for advantage/disadvantage.
Statistics & Research
Generate random samples for simulations, Monte Carlo methods, or statistical experiments.
Giveaways
Assign a number to each participant, then generate a random winner number for fully transparent, verifiable draws.
Classroom Activities
Pick random student numbers for cold-calling, test question selection, or seating assignments.
PIN & Password Digits
Generate a random sequence of digits for testing, training, or demonstration purposes.
Frequently Asked Questions
crypto.getRandomValues() — the Web Cryptography API available in all modern browsers. This is cryptographic-quality randomness (CSPRNG), the same standard used in TLS/SSL and password managers.Free Random Number Generator
The Wheel Spin Pro Random Number Generator uses crypto.getRandomValues() — the same cryptographically secure source used by password managers and security tools — to produce genuinely unpredictable numbers. Set any minimum and maximum value, pick how many numbers to generate at once, and choose whether to allow duplicates. Results appear as animated number tiles so you can see them clearly on any screen.
Common uses include lottery number selection (presets for 1–6, 1–49, Lotto 6/49, Powerball, and Mega Millions are built in), random prize draws, statistical sampling, classroom maths games, and software testing. The Sort option arranges results ascending or descending for readability. Every generation is logged in the on-page history so you can review previous sets without re-running.
For random selection from a named list rather than a numeric range, try the Random Name Picker or Classic Spinning Wheel. To split a list into equal groups, use the Team Generator.