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Plinko Calculator: Odds per Slot & RTP

See exactly how often the ball lands in each slot, how rare the edge really is, and what a payout table returns. Exact binomial math for a fair 50/50 board.

Copy them from the game's info screen. Presets below are the example tables from our 1,000,000-ball simulation (16 rows).
Chance of either edge slot
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Middle 3 slots
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RTP of your table / house edge
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Balls that pay less than the bet
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Volatility (std. dev. per $1 ball)
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Where the ball lands

SlotPathsChance1 inMultiplierShare of RTP

How the Plinko math works

At every peg the ball goes left or right with a 50/50 chance. After n rows it lands in one of n + 1 slots. The number of paths to slot k is C(n, k), so its chance is C(n, k) / 2^n — a binomial distribution, the same bell curve as a Galton board. The edge slots have exactly one path each, which is why they are so rare.

The RTP of a payout table is the sum of multiplier × chance over all slots. Risk levels usually share the same RTP: high risk just takes money from the middle slots and puts it on the edges. See what that does to 10,000 players in our Plinko simulation.

FAQ

What are the odds of hitting the edge in Plinko?

On a board with n rows where every bounce is 50/50, each edge slot is 1 in 2^n. With 16 rows that is 1 in 65,536 per edge, or 1 in 32,768 for either edge. With 8 rows it is 1 in 256 per edge.

How do I calculate the RTP of a Plinko payout table?

Multiply each slot's multiplier by its probability and add them up. The probability of slot k on an n-row board is C(n, k) / 2^n. Enter the multipliers from the game's info screen into the calculator to see the exact RTP.

Is high risk Plinko better than low risk?

Not on average: a game's risk levels usually share the same RTP. High risk moves the money to the rare edge slots and pays less in the middle, so results swing much more. In our 1,000,000-ball simulation the median high-risk player lost almost 5 times more than the median low-risk player over 1,000 balls.

Can a Plinko strategy beat the house?

No. Each ball is independent and the edge is built into the payout table. Changing rows, risk level or bet size changes the swings, not the expected loss per dollar.

Link to this calculator

Free to use on forums, blogs and in videos. Copy this link:

<a href="https://boosterhand.com/tools/plinko-calculator/">Plinko calculator: odds per slot and RTP (BoosterHand)</a>

Related: Mines calculator · Bankroll calculator · Volatility explained · House edge

18+ only. Plinko is a game of chance: no row count or risk level removes the house edge. Responsible gambling.