Plinko calculator
Pick a row count and the calculator lists how often the ball lands in each bucket. Type in the multipliers from your board and it adds up the return per $1, the edge, and the share of drops that return under 1×. It can't steer a ball or tell you where the next one goes.
Calculator
| Bucket | Chance | 1 in |
|---|---|---|
| 1 | 0.00153% | 65,536 |
| 2 | 0.0244% | 4,096 |
| 3 | 0.183% | 546 |
| 4 | 0.854% | 117 |
| 5 | 2.78% | 36 |
| 6 | 6.67% | 15 |
| 7 | 12.22% | 8 |
| 8 | 17.46% | 6 |
| 9 | 19.64% | 5 |
| 10 | 17.46% | 6 |
| 11 | 12.22% | 8 |
| 12 | 6.67% | 15 |
| 13 | 2.78% | 36 |
| 14 | 0.854% | 117 |
| 15 | 0.183% | 546 |
| 16 | 0.0244% | 4,096 |
| 17 | 0.00153% | 65,536 |
Formula: C(rows, bucket) / 2^rows, every peg a 50/50 bounce. Copy the multipliers from the game's own board; they differ by casino and risk level.
Runs in your browser. Nothing you type is sent or stored.
Filling it in
Move the slider to your row count, 8 to 16. The bucket chances appear straight away, numbered 1 from the left. That part needs nothing else, since a ball goes left or right at each peg on a coin flip.
To get the return, set the rows and the risk level in the game first. Then copy the multipliers off the bottom row, left to right. Spaces or commas both work, and a trailing x is fine. Boards are symmetric, so you can stop at the middle bucket and the rest gets mirrored. On 12 rows that's 7 numbers instead of 13. If the count is wrong, a line in yellow tells you how many it wanted.
- Chance of bucket i
- C(rows, i) ÷ 2^rows, buckets counted from 0 at the left edge
- Return per $1
- sum of chance × multiplier over all buckets
- House edge
- 1 − return per $1
- Pays under 1×
- sum of the chances of buckets below 1×
- Stake setup
- between 8 and 16 rows, four risk settings, 99% RTP
Worked example: a made-up 12-row board
Set rows to 12 and type 24 6 3 1.4 1.2 0.7 0.6 into the multiplier box. We made these numbers up, they're not any casino's board. The calculator mirrors them into 13 buckets and returns $0.9900 per $1, a 1.00% house edge, and 61.2% of drops paying under 1×.
| Bucket | Multiplier | Chance (one bucket) | 1 in | Adds to RTP (both sides) |
|---|---|---|---|---|
| 1 and 13 | 24× | 0.0244% | 4,096 | 1.17 points |
| 2 and 12 | 6× | 0.2930% | 341 | 3.52 points |
| 3 and 11 | 3× | 1.6113% | 62 | 9.67 points |
| 4 and 10 | 1.4× | 5.3711% | 19 | 15.04 points |
| 5 and 9 | 1.2× | 12.0850% | 8 | 29.00 points |
| 6 and 8 | 0.7× | 19.3359% | 5 | 27.07 points |
| 7 (centre) | 0.6× | 22.5586% | 4 | 13.54 points |
| Total | 100% | 99.00% |
Made-up board. Sums from calc.py, run 2026-11-12. Exact total 99.0039%.
Look at where the return actually comes from. The two 24× edges together add about one point. Buckets 5 to 9, the boring middle, carry close to 70 of the 99 points. You'll see that pattern on real boards too, once you type them in.
| Buckets | RTP shown instead of 99.00% |
|---|---|
| 1 and 13 | 99.01% |
| 3 and 11 | 99.33% |
| 5 and 9 | 101.42% |
| 6 and 8 | 102.87% |
| 7 (centre, single) | 101.26% |
Own calculation: change in RTP = 0.1 × chance of the bucket(s). Exact base 99.0039%.
A slip near the centre shows up fast. If your result comes out above 100%, or two or more points away from the stated RTP, check the middle multipliers first. An error in the edge buckets barely moves the total, so it can hide.
What it won't do
Each drop is its own event. The seeds decide every bounce, and whatever happened on the previous drops has no say in the next one. Plinko "simulators" are fine for watching the spread. Predictors and hacks for Plinko are scams, full stop.
18+. Every drop costs the edge on average, whichever board you pick. Decide your limit first. Support: Responsible gaming. No link to Stake. Names stay with whoever owns them.
Questions
Where are the multipliers for my board?
On the game screen, under the pegs. They change with the row count and the risk level, so set both first and copy the row that shows.
Why is the centre bucket so likely?
More paths lead there. On 12 rows, 924 of the 4,096 possible paths end in the middle bucket and only one path ends in each corner.
Can it give me the RTP without the multipliers?
No. Bucket chances never change between casinos, but the return depends on the multipliers each game sets.
Does a higher risk level change the house edge?
Not if the game lists the same RTP for every level. The money moves from the middle buckets to the edges. Type both boards in and compare the result.
Sources
- Stake: Plinko game page (Wayback, 3 Jul 2026) · current page on stake.com. Row choice from 8 up to 16, four risk settings from Easy up to Expert, RTP 99%. We cite an archived copy because stake.com blocks our fetcher. Checked 12 November 2026
- Stake: provably fair game events (Wayback, 19 Jul 2025). Plinko section: a coin-flip bounce for each row of pegs Checked 12 November 2026
18+ · Play responsibly · gamblingtherapy.org