Generate using pattern. Code length:. Charactersets to use:. Generate using a pattern. Help Generate using pattern. New pattern options were added A, a,?

Please check the pattern options to see what's new! Code pattern:. Code preview. Exclude characters:. We advise you to exclude Look-a-like characters.

We pre-filled the field above with the most common Look-a-likes. Output result to:. Generate using characterset X This generates codes of a given length consisting of the selected charactersets.

Convert a cardinal number to an ordinal number. Convert an Ordinal to a Number. Convert an ordinal number to a cardinal number. Convert a Number to Roman Number.

Convert Arabic numerals to Roman numerals. Convert a Roman Number to Regular Number. Convert Roman Numerals to Arabic numerals. Generate Negafibonacci Numbers.

Calculate a series of extended Fibonacci numbers. Generate Fibonacci Primes. Find numbers that are both Fibonacci numbers and primes.

Fibonacci Number Test. Check if a number is a Fibonacci number. Fibonacci Prime Test. Check if a number is both a Fibonacci number and a prime.

Construct Fibonacci Words. Create a sequence of Fibonacci words. Construct Tribonacci Words. Create a sequence of Tribonacci words.

Generate Negalucas Numbers. Calculate a series of extended Lucas numbers. Generate Lucas Primes. Lucas Prime Test. Check if a number is both a Lucas number and a prime.

Calculate the Trace of a Matrix. Find the sum of main diagonal elements of a matrix. Calculate the Eigenvalues of a Matrix.

Find the eigenvalues of a matrix. Multiply Matrices. Compute the product of two matrices. Add Matrices. Compute the sum of two matrices.

Subtract Matrices. Compute the difference of two matrices. Generate Moser de Bruijn Numbers. Calculate a sequence of Moser-Bruijn numbers.

Generate Kolakoski Numbers. Calculate a sequence of Oldenburger-Kolakoski numbers. Generate Stanley Numbers. Calculate a sequence of Stanley numbers.

Generate Gijswijt Numbers. Calculate a sequence of self-describing Gijswijt numbers. Generate Rudin-Shapiro Numbers. Calculate a sequence of Rusin-Shapiro numbers.

Generate Baum-Sweet Numbers. Calculate a sequence of Baum-Sweet numbers. Generate Thue-Morse Sequence. Calculate members of Thue-Morse number series.

Generate Perfect Numbers. Create a list of perfect numbers. Generate Almost Perfect Numbers. Create a list of almost perfect numbers. Generate Excessive Number Sequence.

Calculate a sequence of abundant numbers. Generate Deficient Number Sequence. Calculate a sequence of deficient numbers. Calculate Dragon Curve Numbers.

Generate a list of paperfolding sequence numbers. Generate Composite Numbers. Create a list of numbers that are not prime. Draw a Numbers Table.

Generate a table of numbers. Test if a Number is Perfect. Check if the given number is a perfect number.

Test if a Number is Abundant. Check if the given number is an abundant number. Test if a Number is Deficient. Check if the given number is a deficient number.

Calculate the Modulo. Find the modulus of a number. Group Number Digits. Group together digits of a number. Split a Number into Digits. Create a list of digits from a number.

Printf Numbers. Apply sprintf or printf function to numbers. Create Zalgo Numbers. Let Zalgo destroy your numbers. Mirror a Number.

Create a mirror copy of a number. Zero-pad a Number. Reverse a Number. Reverse the order of digits of a number.

Rotate a Number. Cyclically rotate digits of a number to the left or right. Increase All Digits in a Number.

Add one to every digit in a number. Decrease All Digits in a Number. Subtract one from every digit in a number. Count Number Occurrences.

Find how often numeric values occur. Calculate Percentages. Generate Natural Numbers. Create a list of natural numbers. Generate Rational Numbers.

Create a list of rational numbers. Generate Constant Sequence. Create a series of numbers where all terms are the same.

Generate Real Numbers. Create a sequence of real numbers. Generate Complex Numbers. Create a list of complex numbers. Generate Binary Numbers. Create a sequence of binary numbers.

Generate Pairs of Numbers. Create a sequence of number pairs. Generate Triples of Numbers. Create a sequence of number triples.

Generate Tuples of Numbers. Create a sequence of number n-tuples. Find the Decimal Expansion of a Number. Rewrite a number in the decimal representation.

Convert a Fraction to a Decimal. Convert a fraction to a decimal number. Convert a Decimal to a Fraction. Convert a decimal number to a fraction.

Convert a Binary Number to Octal Number. Convert a base two number to base eight number. Convert a Binary Number to Decimal Number.

Convert a base two number to base ten number. Convert a Binary Number to Hex Number. Convert a base two number to base sixteen number. To generate a random number between 1 and , do the same, but with in the second field of the picker.

To simulate a dice roll , the range should be 1 to 6 for a standard six-sided dice. To generate more than one unique random number, just select how many you need from the drop-down below.

For example, selecting to draw 6 numbers out of the set of 1 to 49 possible would be equivalent to simulating a lottery draw for a game with these parameters.

You might be organizing a charity lottery, a giveaway, a sweepstakes, etc. It is completely unbiased and outside of your control , so you can assure your crowd of the fairness of the draw, which might not be true if you are using standard methods like rolling a dice.

If you need to choose several among the participants instead, just select the number of unique numbers you want generated by our random number picker and you are all set.

However, it is usually best to draw the winners one after another, to keep the tension for longer discarding repeat draws as you go.

A random number generator is also useful if you need to decide who goes first in some game or activity, such as board games, sport games and sports competitions.

Nowadays, a number of government-run and private lotteries and lottery games are using software RNGs instead of more traditional drawing methods.

RNGs are also used to determine the outcomes of all modern slot machines. Finally, random numbers are also useful in statistics and simulations, where they might be generated from distributions different than the uniform, e.

For such use-cases a more sophisticated software is required. There is a philosophical question about what exactly "random" is , but its defining characteristic is surely unpredictability.

We cannot talk about the unpredictability of a single number, since that number is just what it is, but we can talk about the unpredictability of a series of numbers number sequence.

If a sequence of numbers is random, then you should not be able to predict the next number in the sequence while knowing any part of the sequence so far.

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