Random Number Generator
A random number generator picks an unpredictable number within a range you set, such as 1-100 or 20-50. Our free online Random Number Generator produces cryptographically strong random numbers and works just like a dice, where you choose the range and so the number of possible outcomes.
Random Number Generator
Example Random Number Generators
How to use the Random Number Generator?
Our Random Number Generator generates a random number between two numbers you entered (this number is also included in the options). For example, if you entered 23 for the lowest and 240 for the highest number, the result will be a random number between 23 and 240. You can also generate more than one random number at a time.
Finally, you have two more options. You are allowed to set repetition and sorting of the random numbers (from high to low and low to high). You can easily copy-paste the generated random number or a set of random numbers. If, for any reason, you do not like the random number you have just received, click on the Generate button again and we will provide a new random number for you.
How is the random number generated?
There are two types of random number generations. True random number generators (TRNG) or hardware random-number generators (HRNGS) generate random numbers, wherein each generation is a function of the current value of a physical environment’s attribute that is constantly changing in a manner that is practically impossible to model. Such devices are often based on microscopic phenomena that generate low-level, statistically random "noise" signals, such as thermal noise, the photoelectric effect, involving a beam splitter, and other quantum phenomena. These stochastic processes are, in theory, completely unpredictable for as long as an equation governing such phenomena is unknown or uncomputable, and the theory’s assertions of unpredictability are subject to experimental tests.
This would be in contrast to so-called "random number generations" done by pseudorandom number generators (PRNGs) that generate numbers that only look random but are in fact pre-determined—these generations can be reproduced simply by knowing the state of the PRNG. As for the point, generating truly random numbers from deterministic things like computers is impossible.
We are using a method that lets you get cryptographically strong random values. Cryptographically strong random numbers meet the minimum statistical random number generator tests specified in FIPS 140-2, Security Requirements for Cryptographic Modules, Section 4.9.1.
Frequently asked questions
How do I generate a random number?
Set the minimum and maximum values, then click generate. The tool returns an unpredictable number within that range every time.
Are the numbers truly random?
They are cryptographically strong random numbers, which are far more unpredictable than ordinary random functions and suitable for draws and security uses.
Can I pick a number between 1 and 100?
Yes. Enter 1 as the minimum and 100 as the maximum, and the generator returns a random number in that range.
How is this different from a dice roll?
It works the same way but with any range you choose, not just 1 to 6. You set the smallest and largest possible numbers.
Can I use it for a giveaway or draw?
Yes. Set the range to match your number of entries and the random result fairly picks a winner with no bias.