Keno Calculator
Hit probabilities per spot
Keno odds are hypergeometric: you pick a set of numbers, the game draws another set, and the overlap decides your payout. The maths is exact, with no simulation needed.
Set the pool, the number of balls drawn and how many spots you play to get the full probability table, including the chance of hitting at least a given number.
Crypto keno usually uses 40; classic keno 80.
Loads the published table for that risk setting and your number of spots.
This table returns 98.97% RTP — a house edge of 1.03%. Enter your casino's own multipliers to check theirs.
All 6 hits
40.0000x
0.00547% — 1 in 18,278
Chance of a profit
15.28%
Any outcome paying above 1x
Return to player
98.97%
House edge 1.03%
Average hits
1.50
Expected overlap per round
Pick your board and draw
Click numbers to build your ticket (up to 10 spots). Each round draws 10 balls from 40, ball by ball.
- Rounds played
- 0
- Best round
- 0.0000x
- Average hits
- —
- Theoretical
- 1.50
Same stake every round.
0 = no limit. This is where real progressions die.
Stop once you are up this much. 0 = never.
Stop once you are down this much. 0 = never.
- Net result
- +$67.26
- Total wagered
- $250
- Win rate
- 18.80%
- Max drawdown
- $13
- Longest losing streak
- 18
- Peak balance
- $568
- Biggest single win
- $15.50
- Ended by
- Session length
1,000 simulated sessions
The same setup replayed from scratch, so the spread of outcomes is visible rather than one lucky run.
| Hits | Pays | Exactly | At least | Odds | RTP share |
|---|---|---|---|---|---|
| 0 | 0.0000x | 15.47% | 100.00% | 1 in 6.5 | 0% |
| 1 | 0.0000x | 37.13% | 84.53% | 1 in 2.7 | 0% |
| 2 | 1.0000x | 32.13% | 47.40% | 1 in 3.1 | 32.13% |
| 3 | 3.6800x | 12.69% | 15.28% | 1 in 7.9 | 46.71% |
| 4 | 7.0000x | 2.38% | 2.58% | 1 in 42.0 | 16.66% |
| 5 | 16.5000x | 0.197% | 0.202% | 1 in 507.7 | 3.25% |
| 6 | 40.0000x | 0.00547% | 0.00547% | 1 in 18,278 | 0.219% |
Probabilities are exact hypergeometric values for a 40-ball pool. The paytables are the published crypto-keno tables; edit any cell and the RTP recalculates, which is the fastest way to check whether an operator's table is as generous as it looks. Currently: 98.97% RTP on 6 spots.
How to read the results
- Each row shows the probability of exactly that many hits.
- At least is the cumulative probability of hitting that many or more — the number that matters for paytables.
- Picking more spots lowers the chance of a perfect hit but raises the chance of a partial payout.
- Compare the probabilities against your casino's paytable to derive its real RTP.
Frequently asked questions
What are the odds of hitting 10 out of 10 in keno?
On a classic 80-ball game with 20 drawn, hitting all 10 spots is about 1 in 8.9 million. Crypto keno usually uses a 40-ball pool with 10 drawn, which shortens the odds considerably.
How many spots should I play?
Fewer spots hit more consistently for small multipliers; more spots create lottery-style payouts. The house edge is set by the paytable, not by the number of spots.
How is keno probability calculated?
It is the hypergeometric distribution: C(picks, hits) times C(pool - picks, drawn - hits), divided by C(pool, drawn).
Related calculators
These tools are informational. They describe the mathematics of casino games; they do not predict outcomes and no calculator can overcome a house edge. Gambling involves real financial risk — 18+ only, and seek help if it stops being entertainment.