Games and odds · free tool

Plinko Odds Calculator and Practice Drops

Updated 8 October 2026 · 5 minute read

Pick the rows and the payouts under the slots. The calculator shows the exact chance of every slot, how often a drop pays more than the stake, what the board keeps on average, and lets you drop practice balls with pretend money.

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21.0%of drops pay more than the stake back

1 in 32,768to land on the top payout, 33.48×

₹97comes back, on average, for every ₹100 dropped

₹300expected loss over 100 drops at ₹100

22%chance of finishing those 100 drops ahead

19.6%chance of the middle slot, the likeliest

On a board of 16 rows the ball lands in the middle slot 19.6% of the time and in an outer slot only 1 in 32,768. With the medium illustration scaled to a 3% edge, 21.0% of drops pay more than the stake back, and the board keeps about ₹300 over 100 drops at ₹100.

16 rows, medium illustration with a 3% edge: the left half of the board (the right half mirrors it)
Slot from the left	Chance of landing there	Pays	Comes back from this slot per ₹100
1	0.0015%	33.48×	₹0.05
2	0.0244%	11.04×	₹0.27
3	0.18%	4.94×	₹0.90
4	0.85%	2.65×	₹2.26
5	2.78%	1.66×	₹4.61
6	6.67%	1.16×	₹7.73
7	12.2%	0.92×	₹11.24
8	17.5%	0.8×	₹13.96
9	19.6%	0.76×	₹14.92

Practise with pretend money

Each ball takes a random left-or-right bounce at every row, using random numbers from your browser, and pays what the board above shows for its slot. There is no money in it, and it is not any app’s game: it shows how a session tends to run.

Pretend balance (₹)

How a Plinko board works

A ball drops from the top of a board of pegs. At each peg it bounces left or right, and after the last row it lands in one of the slots along the bottom. Each slot has a payout, a multiple of the stake. As commonly described, the outer slots show the biggest payouts and the middle slots show less than 1×. Apps differ in the number of rows, often a choice between 8 and 16, and in the payouts they show, so this calculator takes both from you.

The chances are exact

If every peg sends the ball left or right with equal chance, the slot is the number of times the ball went right. A board of 16 rows has 65,536 possible paths. Exactly 12,870 of them end in the middle slot, which is 19.6% of drops. Only one path ends in each outer slot, so an outer slot comes up 1 time in 65,536 and either outer slot 1 time in 32,768. The five middle slots take 79.0% of all balls. These chances do not depend on any payout. They do assume an even bounce at every peg, and we cannot see whether an app’s board does that.

What the payouts decide

Add up chance times payout for every slot and you have the return of the board. One minus the return is the edge, the share of every stake the board keeps on average. Take the medium illustration on 16 rows with a 3% edge. Payouts run from 33.48× at the outer slots down to 0.76× in the middle. 21.0% of drops pay more than the stake back and 79.0% pay less. The 33.48× slot supplies only ₹0.10 of the ₹97 that comes back for every ₹100 dropped, while the middle slot alone supplies ₹14.92. The big edge payouts get the attention, but the middle of the board pays the average.

How to use the calculator

Set the rows, from 8 to 16. Then choose what sits under the slots: a gentle, medium or steep illustration scaled to the edge you pick, or “My app’s payouts”, where you type the payout under each slot from left to right. The tiles show how often a drop beats the stake, what the top payout needs and what the board keeps. The slot table shows each chance as a bar, and a second table sets 1, 10, 100 and your own number of drops side by side.

The illustration is built in plain steps, and the calculator prints each one. Rarer slots weigh more: a slot’s weight is its chance raised to the power −0.25 for gentle, −0.4 for medium and −0.55 for steep. One number multiplies every weight so that the chances times the payouts add up to the return that leaves the edge you chose. Payouts are kept to two decimals, with a cent moved here and there so the rounding does not shift the edge. It is a construction for showing how a board with big outer payouts still keeps its share, never any app’s table.

Practice drops, and what they show

Drop 1, 10 or 100 balls and watch the pretend balance. At ₹100 a drop, 100 drops cost ₹300 on average on all three illustrations, but the spread differs: about ₹227 either side of that on gentle, ₹488 on medium and ₹1,099 on steep. About 10%, 22% and 27% of 100-drop sessions finish ahead. A steep board has more good sessions and worse bad ones, and its average cost does not move. Sessions drift toward the average as they lengthen: on the medium board 29% of 10-drop sessions finish ahead, and 22% of 100-drop sessions.

What this page cannot tell you

We do not know any app’s payouts or how its ball bounces, so the calculator is only as true as the numbers you type. If your app does not show its payouts, treat every result as an illustration. Past drops say nothing about the next one, so no pattern of landings, and no predictor, can tell you where a ball will land. Decide a limit first with the daily limit guide. The Mines, Dice and Aviator odds calculators work through the same idea for other games, the free tools page lists the rest, and the games guide covers the game types an app may list.

Common questions

Can anyone predict where a Plinko ball will land?

No. On a board that bounces at random, each ball takes a fresh left-or-right bounce at every peg, so earlier balls say nothing about the next one. What can be worked out is how often each slot comes up: on 16 rows the middle slot takes 19.6% of balls and an outer slot 1 in 65,536. A tool that claims to know the next slot is guessing.

Why do the biggest Plinko payouts almost never come up?

Because the slots that pay most are the ones the ball reaches least. On 16 rows only 1 path in 65,536 ends in each outer slot, while 12,870 paths end in the middle. A board can show a large payout at the edge and still keep its share, since that slot adds almost nothing to the average.

Does a higher-risk Plinko board keep more of my stake?

Not by itself. What a board keeps is set by its payouts and the slot chances together. A steeper table moves payouts from the middle to the edges, which widens the ups and downs, but a board built to keep 3% keeps 3% on the gentle, medium and steep settings. Check the figures your own app shows.

How can I work out what my own Plinko board keeps?

Choose “My app’s payouts”, type the payout under each slot from left to right, and the calculator multiplies each by its exact chance and adds them up. The total is what comes back per ₹1 staked, and one minus it is the edge. If you type only the left half, the right half is mirrored.

Is the Plinko practice mode the same as the game in my app?

No. Practice drops use random left-or-right bounces from your browser and the payouts shown above, with pretend money. They show how a session tends to run, not how any app behaves. We cannot see inside any app, so it cannot show how yours behaves.

Are the chances of finishing ahead on this Plinko page exact?

For sessions of up to 250 drops, yes: they come from following the running total of every possible session. Longer ones are the share of up to 10,000 simulated sessions with fixed random numbers, marked with a star and good to about a point. Slot chances and averages are exact at any length.

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