Keno Number Generator

Generate Keno Numbers!

Generate Keno numbers free and quickly!

What is Keno?

Keno is a popular lottery game which can be played at casinos, bingo halls, via television or even online. It is available in some form in most countries in which gambling is allowed. In the game the player selects a series of numbers, and then a series of keno balls will be drawn with different numbers on them. Depending how many correct numbers the player got, a price is payed out. One of the major countries where Keno is played is the United States.

How to play Keno?

Playing Keno is simple! One of the main attractions of the game is that it is simple to learn and start with. It is a luck-based game, and there exists no techniques or tactics to overcome this. Some people might claim that there is some sort of tactic, however this is mathematically impossible and hence do not trust any such advice.

Regarding the odds of the game, mathematically, the game provider hosting the game will always have “an edge”, meaning that in the long run, they will earn money from providing the game. However as with all forms of gambling, in the short run, or in the long run if you are very lucky, it is possible to win large amounts of money. This Keno number generator is a great and simple way to generate a series of keno numbers for playing or experimenting. There is always a risk associated with gambling and it should therefore only be done within ones personal financial limits.

Probability of Winning in Keno

The probabilities of winning can be calculated using combinatorics, which is a sub field of mathematics [1]. To calculate the probability of a certain number of hits, all the combinations which could lead to that outcome of numbers needs to be considered. Let us start with a simple case, what is the probability to hit all 20 numbers on a Keno ticket? We need to calculate the probability of hitting 20 numbers correctly with each number ranging from 1 to 80. This can be done by using the binomial coefficient, also called “n choose k”, this is written mathematically as

{{N}\choose{k}}  =  \frac{n!}{k!(n-k)!}  

This calculates the number of ways to choose ‘k’ numbers, disregarding their order, from ‘n’ numbers. To hit 20 numbers with each number ranging from 1 to 80, we can use

Pr( \text{'20 hits'} )  = {{80}\choose{20}} = \text{1 in 3535316142212173824} =\text{1 in } 3.5353 10^{18} =\text{1 in 353530 million million}

This is indeed a very slim chance, so it is extremely unlikely to hit all 20 numbers in a Keno board. This is however the outcome which is the least likely, however it is possible to win by getting a fewer number of hits. Hence the total chance to win is considerable higher than this.

Frequently asked questions

Is Keno a good game to play compared to other games?

The benefits of Keno is that the outcome of winning can be easily calculated and is very predictable. Hence it is easy to know how large chance there is of winning. The game is also luck based and does not require practice does not benefit the player, such as in games like Blackjack and Poker. This makes it a good “starting” game for players who want to try out gambling.

In this sense Keno is comparable to Roulette, since both are luck based and have a straight forward way of calculating the chance of winning.

Where is the best place to play Keno?

Keno exists in both physical and digital form. In terms of probability of winning (house edge) digital providers (such as websites) often provide the best chances of winning. However some people appreciate the charm and/or convenience of physical Keno drawings rather than just digitally drawn balls. So in the end it is a matter of taste.

How big is the house edge in Keno?

Keno has a house edge of about 25-40% [2] which can be regarded as quite high compared to other games such as Roulette.

Are there any tactics in Keno?

This depends on what the tactic is for. If the tactic is to aim to reduce losses small bets should be done, with large time in between each bet. However since Keno is a luck based game there is in general no ways to obtain an edge over the house, statistically speaking.

Are there ways to beat the house edge in Keno?

Online casinos use random number generators (RNG’s) to generate the drawn numbers. In theory it would be possible to hack/tamper with the RNG to be able to generate winning numbers, however this would be illegal and practically difficult to do, due to security mechanisms employed by the RNG’s. So in practice it is very difficult to “beat the house/casino” in Keno.


[1] Mark Bollman (2014). Basic Gambling Mathematics: The Numbers Behind the Neon. CRC Press. pp. 40–41.