What Is Keno?
Keno is a lottery-style game where you select a set of numbers (called spots) from a fixed pool, and then the house draws 20 numbers at random. You win based on how many of your chosen spots match the drawn numbers. The more matches, the higher the payout. Simple structure, wide range of outcomes.
Keno has been around in various forms since ancient China and has been a fixture in North American casinos since the early 20th century. Today it exists in two distinct formats for Canadian players:
- Casino keno: played at land-based and online casinos, drawing from a 1–80 pool, with rounds running every few minutes. You can pick anywhere from 1 to 20 spots per ticket depending on the variant.
- Lottery keno: run by Canadian provincial lottery corporations, like OLG (Daily Keno), Atlantic Lottery Corporation (Keno Atlantic), and BCLC (BC Keno). These use a 1–70 or 1–80 pool with scheduled draw times and fixed-price tickets.
The core mechanic is identical across both. In either case, 20 numbers are drawn, and payouts are based on matches. However, the details of the pool size, draw schedule, spot limits, and prize structures may vary.
How to Use This Keno Number Generator
Three steps. That's it.
- Use the slider to set your spot count at the top of the board. Choose any number from 1 to 20. This determines how many numbers will be randomly drawn from the 1–80 pool.
- Click Draw Numbers. The board highlights your randomly selected spots and the right panel updates immediately with your drawn numbers, the pool size, and your exact match probability.
- Review your results. The 'Your Numbers' panel on the right shows a clean list of all drawn numbers alongside the chance of an exact match.
- Use Clear Board to reset everything and generate a fresh set.
That's the complete workflow. The board is visual by design — you can see which numbers landed across the full 1–80 grid at a glance, which is more useful than a plain list when you're transferring numbers to a physical keno card or an online game interface.
How Many Keno Numbers Should You Pick?
The spot count is the single most important decision in keno. That's not because any number of spots is 'lucky', but because it fundamentally changes the risk/reward structure of every ticket you play.
Here's what the maths actually shows:
2–4 Spots: High Hit Rate, Low Payout
Picking 2–4 spots gives you the highest probability of matching all your selections. This sounds good until you see what those tickets pay. A 2-spot match on a casino keno ticket typically pays 12:1 or 14:1. The probability of hitting both on a 2-spot ticket is roughly 6%. You'll hit it reasonably often; you won't win much when you do. Low-volatility, low-reward territory.
5–8 Spots: The Middle Ground
This is where most experienced keno players operate. Payouts start to get interesting (a full match on a 7-spot ticket can pay several hundred dollars for a $1 wager), while partial matches (hitting 5 of 7 or 6 of 8) keep some return flowing. The probabilities are reachable without requiring complete luck. Most serious players consider 5–8 spots the practical sweet spot between payout and hit frequency.
10 Spots: The Most Popular Format
The 10-spot ticket is by far the most played keno format in both Canadian lottery keno and casino keno. The jackpot for matching all 10 is the highest payout on most boards and even partial matches (7/10, 8/10, 9/10) can still pay meaningfully. The tradeoff is that a perfect 10-spot match has odds of approximately 1 in 8.9 million. The 10-spot generator preset reflects this — it's the right default for most players.
15–20 Spots: Long-Shot Territory
High spot counts shift the probability structure dramatically. With 20 numbers in play, partial matches become very common. You'll frequently hit 8 or 9 of 20, but the full-match jackpot odds become astronomical. Some casinos offer specific payouts for low-match counts on high-spot tickets (including, occasionally, for catching zero numbers). These are niche formats. Understand what you're buying before playing them.
Spot count cheat sheet
| Spot count | What you're trading off |
|---|---|
| 2–4 spots | High win rate, modest payouts. Good for lower-variance play. |
| 5–8 spots | Balanced. Best mix of reachable payouts and meaningful win frequency. |
| 10 spots | Most popular. Big jackpot potential; most draws return nothing or very little. |
| 15–20 spots | Extreme long-shot territory. Partial match payouts common; full matches near-impossible. |
What Does 'Chance of Exact Match' Mean?
This is the feature that separates this tool from a basic random number picker — and it's worth understanding properly.
The exact match probability tells you the precise mathematical likelihood that the specific set of numbers just drawn would all appear together in a single keno draw.
🚀 It's calculated using combinatorics: given a pool of 80 numbers with 20 drawn, what is the probability of landing on exactly this combination?
For a 10-spot draw, that number is approximately 0.0000000000607% (which the tool displays in full). That figure isn't there to discourage you. It's there to give you an accurate picture of what you're working with before you play those numbers in a real game.
| Spots picked | Approximate exact match probability |
|---|---|
| 2 spots | ~6.33% (1 in 15.8) |
| 3 spots | ~1.39% (1 in 72) |
| 5 spots | ~0.065% (1 in 1,551) |
| 7 spots | ~0.0024% (1 in 41,979) |
| 10 spots | ~0.0000000000607% (1 in 8,911,711+) |
| 15 spots | Astronomically small |
| 20 spots | Essentially zero for any practical purpose |
The exact match probability is the probability that you hit every single one of your chosen spots in the draw — also known as: the jackpot condition. It is not your overall probability of winning a payout, which is considerably higher because most keno paytables pay for partial matches (e.g. 6/10, 7/10, 8/10 on a 10-spot ticket). But knowing the exact match probability gives you a realistic anchor for what that top prize actually represents in mathematical terms.
Hot Numbers, Cold Numbers, Lucky Numbers: The Honest Answer
This section exists because almost every keno resource online tries to have it both ways. They'll tell you that all numbers are equally random, then spend three paragraphs suggesting you track 'hot' numbers anyway. That's not an analytical approach. Here's what's actually true.
Every draw is independent. Every legitimate keno draw uses a certified Random Number Generator. The RNG produces 20 numbers from the pool with equal probability, with no memory of previous draws.
Hot and cold numbers are statistical noise. 'Hot numbers' (those drawn more frequently over a recent sample) are a natural consequence of random variation over a finite dataset. If you draw 20 numbers from 80, sixty draws in a row, some numbers will appear more than the 15% baseline and some will appear less. That's not a pattern. That's what random looks like in practice. The word for this is variance, not predictability.
So why use a number generator at all?
Because human number selection is systematically biased in ways that have nothing to do with probability. People cluster numbers in the lower ranges (birthdays cap out at 31, skewing the selection towards 1–31). People avoid consecutive numbers because they 'look wrong'. People unconsciously return to the same combinations over and over.
A generator removes all of that. The picks it produces are genuinely unbiased across the full pool. There's no clustering, no avoidance patterns, no favourites. That doesn't change your odds of winning a given draw, but it does mean the numbers you play are distributed across the pool the same way the draw itself is. That's the real reason to use one.
Understanding the Keno House Edge
Using a keno number generator is a good reason to spend ten seconds thinking about what keno actually costs to play.
Keno has one of the highest house edges of any casino or lottery game. It typically sits between 20% and 40%, depending on the operator and the specific paytable. That means that for every $1 wagered on keno, the casino or lottery corporation expects to retain 20 to 40 cents on average across a large number of plays. For comparison: European roulette's house edge is 2.7%. Blackjack with basic strategy is under 1%. You can find more context in our casino odds and house edge guide.
Knowing this doesn't make keno less fun. But the budget decision should be an informed one. A $20 keno session at a casino with a 30% house edge has an expected cost (over many equivalent sessions) of $6. Treating that as an entertainment cost is reasonable. Treating it as a strategy for building returns is not.
| Canadian Keno Format | Approximate House Edge |
|---|---|
| Casino keno (standard 1–80) | 25–40% |
| Daily Keno (Ontario) | ~30% |
| Keno Atlantic | ~28–32% |
| BC Keno | ~25–35% |
| National lottery keno variants | Can exceed 40% on lower-tier prizes |
The range within keno comes from the paytable. Different operators structure their prize tables differently, and some spot counts within the same game carry higher edges than others. There is no legal requirement in Canada (outside of Ontario's iGaming framework) for operators to publish per-game keno RTPs, which makes independent comparison difficult. When in doubt, choose the operator with the most transparent prize matrix.
Getting the Most From This Tool
A few practical notes for using the generator effectively:
- Generate multiple tickets: if you're playing more than one draw or buying multiple cards, generate 3–5 sets at once rather than regenerating single tickets repeatedly. Each set is independently randomised.
- Use the exclude feature for combination play: if you're playing multiple tickets and want different numbers across each set, generate one set, note the numbers, add them to the exclude list, and generate again for a genuinely non-overlapping combination.
- Don't overthink spot count: if you don't have a strong preference, 10-spot is the default for a reason — it's the format with the most consistent paytable support across Canadian operators and the widest range of partial-match prizes.
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