Random Number Generator

Generate random numbers for games, statistics, and more

Tips for Generating Random Numbers

Choose the right settings for your use case:

• Use "Unique Numbers Only" for Draws: If you're picking winners from a pool, enable unique mode so you don't get duplicates. The generator will warn you if you ask for more unique numbers than the range allows.
• Set Decimal Places for Precision: Need random prices ($1.00–$99.99)? Set decimals to 2. Generating random coordinates? Go higher. Leave at 0 for clean integers like dice rolls.
• This Uses Crypto-Grade Randomness: Unlike Math.random(), this generator uses the Web Crypto API under the hood. It's suitable for security-sensitive use cases like temporary passwords or cryptographic nonces.
• Generate in Batches: If you need 100 random numbers, generate them all at once rather than clicking 100 times. Use the "Copy Results" button to grab the whole list.

When Not to Use Math.random()

Math.random() is fine for games and UI effects. But it's predictable enough that attackers can reverse-engineer its seed. This tool uses the Web Crypto API, which is cryptographically secure. Use it when:

• Generating temporary passwords or tokens that users receive via email or SMS.
• Running lotteries, raffles, or giveaways where fairness matters and manipulation must be impossible.
• Seeding simulations that need unbiased, non-repeatable randomness.