Plinko Calculator
Slot probabilities and RTP
A Plinko ball bounces left or right at every peg, so the slot it lands in follows a binomial distribution. The centre slots are hit thousands of times more often than the edges, which is why the outer multipliers can be so large.
Choose the number of rows and how aggressive the paytable should be to see the probability of each slot, its contribution to the RTP and the odds of ever reaching the top multiplier.
Clients offer 8 to 16 rows.
Loads the published paytable for that risk setting.
This table returns 98.99% RTP, a house edge of 1.01%. Change any cell to model a different operator.
Top multiplier
110.0x
0.00305% of drops — 1 in 32,768
Chance of a profit
21.01%
Slots paying more than 1x
Centre multiplier
0.3000x
Lands 19.64% of the time
Return to player
98.99%
House edge 1.01%
Drop the balls
The ball takes a real 50/50 bounce at every peg, drawn from the seed. Slot frequencies converge on the binomial curve as the run gets longer.
Where the balls actually landed (0 drops)
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
- −$11.60
- Total wagered
- $300
- Win rate
- 19.00%
- Max drawdown
- $25
- Longest losing streak
- 22
- Peak balance
- $502
- Biggest single win
- $9.00
- Ended by
- Session length
1,000 simulated sessions
How 300 drops at medium risk on 16 rows actually finish. Hitting the 110.0x slot at all takes about 1 in 32,768 drops.
| Slot | Multiplier | Probability | Odds | RTP share | Hits so far |
|---|---|---|---|---|---|
| 1 | 110.0x | 0.00153% | 1 in 65,536 | 0.168% | 0 |
| 2 | 41.0000x | 0.024% | 1 in 4,096 | 1.00% | 0 |
| 3 | 10.0000x | 0.183% | 1 in 546.1 | 1.83% | 0 |
| 4 | 5.0000x | 0.854% | 1 in 117.0 | 4.27% | 0 |
| 5 | 3.0000x | 2.78% | 1 in 36.0 | 8.33% | 0 |
| 6 | 1.5000x | 6.67% | 1 in 15.0 | 10.00% | 0 |
| 7 | 1.0000x | 12.22% | 1 in 8.2 | 12.22% | 0 |
| 8 | 0.5000x | 17.46% | 1 in 5.7 | 8.73% | 0 |
| 9 | 0.3000x | 19.64% | 1 in 5.1 | 5.89% | 0 |
| 10 | 0.5000x | 17.46% | 1 in 5.7 | 8.73% | 0 |
| 11 | 1.0000x | 12.22% | 1 in 8.2 | 12.22% | 0 |
| 12 | 1.5000x | 6.67% | 1 in 15.0 | 10.00% | 0 |
| 13 | 3.0000x | 2.78% | 1 in 36.0 | 8.33% | 0 |
| 14 | 5.0000x | 0.854% | 1 in 117.0 | 4.27% | 0 |
| 15 | 10.0000x | 0.183% | 1 in 546.1 | 1.83% | 0 |
| 16 | 41.0000x | 0.024% | 1 in 4,096 | 1.00% | 0 |
| 17 | 110.0x | 0.00153% | 1 in 65,536 | 0.168% | 0 |
Slot probabilities are exact binomial values. The paytables are the ones published by the mainstream provably fair clients — edit any cell to match your own casino, and the RTP figure updates with it.
How to read the results
- Probability per slot comes from the binomial distribution: C(rows, k) / 2^rows.
- Risk level controls the spread — high risk strips the centre to fund the outer slots.
- Contribution shows how much each slot adds to the return to player; the centre slots dominate it.
- The full table always sums to 1 minus the house edge, no matter the risk level.
Frequently asked questions
What are the odds of hitting the highest Plinko multiplier?
On a 16-row board the outermost slot needs all 16 bounces to go the same way: 1 in 65,536, or 0.0015%. That is why high-risk boards advertise multipliers of 1,000x and higher.
Does more rows mean better odds?
No — the house edge is identical across row counts. More rows widen the distribution, making the centre less rewarding and the edges more extreme.
What is the RTP of Plinko?
Usually 99% on crypto casinos, meaning a 1% house edge across the whole paytable, regardless of the risk level or number of rows you pick.
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.