Random Number Generator

Cryptographic Random Number Generator

Create cryptographically strong random numbers with this online random number generator.

  • Large numbers: Generate very big random numbers - over 25 digits long positive or negative numbers. It’s a huge enough range for pretty much anything practically imaginable.
  • Multiple numbers: Generate multiple numbers at the same time. You might need a random number for each student in a class, or for other educational or entertainment purposes. When generating multiple numbers simultaneously, you will also have the option to make them all Unique. You can prevent duplicates by clicking the checkbox, and only unique random numbers will be output. You will also be able to sort the numbers that are selected in ascending (low to high) or descending order. As well, choose the formatting of the results by Itemizing the list of numbers, and/or separate numbers with spaces, new lines, commas, spaces, commas and line breaks (new lines).
  • Decimal places: Generate numbers with decimal places - up to 25 decimal places per number.
  • Negative numbers: You can also choose negative random numbers; for example you might set a range of -100 to +100.
  • Cryptographic random: All numbers are generated using cryptographically strong random number generation methods. Previously a “pseudo-random” concept was available. It was removed since now cryptographic random is particularly fast to produce and more secure.

More about Random Number Generation

Ultimately random numbers can be very useful for a variety of purposes, whether it's educational, research, raffle draws, etc. The need for a random number generator that can be customized to your needs can be important. If you want to use the generator to simulate many throws of a dice for example, you can do it just by setting the numbers to between 1 and 6. Or maybe you want to simulate a lottery pick - just generate 6 numbers between 1 and 49 for example.

Cryptographic Random Number Generation

Cryptography is important for financial institutions, order processing, online security, government, etc.

What about true randomness you may ask? Well true random numbers are themselves theoretical in nature. All numbers generated by computers require a certain "seed" value that is put into a complex algorithm that randomizes that value. The more random the seed value the better. However, even the universe has uniformity. Radiation and atoms may seem random in nature, but then why does the earth hold together? Or our bodies don't explode? Believers of true random numbers may therefore be considered proponents of the fallible Chaos Theory. Or something like that.