Duel Keno Calculator: Odds, Payout, RTP and Zero Edge EV
Choose a saved seven- or ten-pick table to calculate Duel Keno odds, payouts and full-table expected value. A separate comparison lets you model 100% RTP, an illustrative 99.9% return, or a session where only some rounds qualify for zero-edge treatment.
Calculate odds and payout
The selected hit count looks up its multiplier directly from the table. To test another payout, edit that table row. A multiplier is the total return: 1× returns the stake, and a return below 1× is a net loss even though it pays something.
Classic · 7 picks · saved multipliers dated 6 July 2026.
Optional payout limit
Calculator results
Results use the selected table and stake.
No payout limit is modeled unless entered.
EV is an average net result under the entered rules. It does not predict a session balance. Amounts exclude fees, taxes and bonuses. Values are rounded for display; operator-specific currency rounding is not modeled.
One-outcome EV illustration
This separate model sets every payout except the selected hit count to zero. It is not the full-game EV shown above, unless all other outcomes actually pay zero.
Using a different pick count or risk mode? Match the complete paytable to that selection before comparing payouts.
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Paytable RTP and payout frequency
Any payout includes partial returns and stake returns. Net profit requires a return greater than the stake. Total wagered is stake × rounds, not an initial deposit.
Compare Zero Edge and other RTP assumptions
Use the same stake for every round. Enter the number of fully qualifying rounds under your chosen assumptions. This tool does not determine eligibility, split a boundary bet or apply an allowance reset.
A benchmark is separate from the entered paytable.
Paytable return and Zero Edge eligibility
The main results use every multiplier in the entered table. Selecting a 100% comparison does not turn that table into a fair table, increase its payouts or change the chance of matching numbers.
The saved presets calculate to 99.8776%–99.9866% RTP before caps. That does not establish which allowance condition applied when they were recorded, or why their return differs from the public 100% label.
A fixed 99.9% return after an allowance ends is not assumed. The mixed-session comparison lets you enter the number of qualifying rounds and the return for the rest, separately from the paytable calculation.
Saved paytables: Classic, Low, Medium and High
These eight tables carry the snapshot date . They remain available for reproducible calculations and comparison; their multipliers are not labeled as current live values. Each return below uses a 40/10 draw with no modeled payout limit.
| Risk mode | RTP — 7 picks | Edge — 7 picks | RTP — 10 picks | Edge — 10 picks |
|---|---|---|---|---|
| Classic | 99.8776% | 0.1224% | 99.9607% | 0.0393% |
| Low | 99.8973% | 0.1027% | 99.9866% | 0.0134% |
| Medium | 99.8881% | 0.1119% | 99.9853% | 0.0147% |
| High | 99.8867% | 0.1133% | 99.9425% | 0.0575% |
Every saved ten-pick table has a smaller calculated edge than the seven-pick table with the same risk label. This comparison applies to these exact multipliers. It does not establish a current promotional rate or make a higher pick count safer.
For a fixed pick count, changing risk mode leaves exact-hit probabilities unchanged. It changes which outcomes pay and how much they return. For example, the saved seven-pick Low table pays from two hits, while High pays from four. The calculator sums the actual paying rows, including zero-hit prizes or gaps if entered in a custom table.
Match the game to the calculator
The paytable determines the calculated payout. Any Zero Edge condition also depends on which bets qualify. The comparison below keeps those two inputs separate.
Inputs that affect the result
- Qualifying game and allowance status.
- Selected pick count and complete paytable.
- Risk mode or paytable variant.
- Maximum payout and bet limits.
- Whether the limit applies to gross return or net profit.
Worked Duel payout examples
These examples use the saved seven-pick tables, a 40/10 draw and a 10-unit stake. Each row describes exactly the listed matches, before any payout cap.
| Saved table / result | Exact probability | Multiplier | Gross return | Net profit / loss |
|---|---|---|---|---|
| Classic · 2 of 7 | 34.3967% | 0.47× | 4.70 | -5.30 |
| Classic · 3 of 7 | 17.6393% | 3.01× | 30.10 | +20.10 |
| High · 4 of 7 | 4.5732% | 7.05× | 70.50 | +60.50 |
Two Classic matches return 4.70 from a 10-unit stake: a payout with a 5.30 net loss. Three matches return 30.10 and leave 20.10 net profit. Across the full Classic seven-pick table, no-payout probability is 42.7684% and net-profit probability is 22.8349%.
That table calculates to 99.8776% RTP. Over 100 rounds at 10 units each, the expected net loss is approximately 1.22 units. This average does not describe how much a particular session will win or lose.
RTP contribution by hit count
Each row is a mutually exclusive exact-hit outcome. Its RTP contribution is probability × effective total-return multiplier, expressed in percentage points. Where an entered limit reduces a payout, both nominal and effective multipliers are shown.
| Hits | Exact probability | Odds | Multiplier | Gross payout | RTP contribution |
|---|---|---|---|---|---|
| Run the calculator to analyze the paytable. | |||||
How this calculator works
The calculator models a uniform draw of distinct numbers without replacement. The saved tables use a pool of 40 numbers and a draw of 10. Matching exactly h of your picks follows the hypergeometric distribution.
P(h hits) = C(picks, h) × C(pool − picks, drawn − h) / C(pool, drawn)
C(a, b) counts combinations. “At least h” sums the exact probabilities from h upward. Full RTP uses exact probabilities only; using overlapping at-least probabilities would count some outcomes more than once.
For each hit count, gross return is stake × multiplier, reduced by any entered limit. A net-profit limit L corresponds to a gross ceiling of stake + L. RTP sums probability × gross return / stake across the complete table; net EV per round is stake × (RTP − 1).
Hit probabilities
Odds are controlled by number pool, draw size, pick count and target hits. They do not change because the payout table changes.
Payout multipliers
The paytable controls how much each hit count returns. This is where risk modes and operator versions matter.
Complete-table return
RTP includes all paying outcomes. A single line gives the complete return only when every other outcome pays zero.
Inside allowance, outside allowance and a mixed session
A session can contain rounds with different returns. If each stake is b, there are R rounds and q rounds qualify for 100% RTP, the other R − q rounds use the return r entered in the comparison.
Expected net result = b × (R − q) × (r − 1)
The qualifying part contributes zero expected net loss before costs. The average session RTP is 1 + ((R − q) / R) × (r − 1). Here r is a decimal: 99.9% means 0.999.
| Rounds at 100% | Turnover at 100% | Other turnover | Average RTP | Expected net result |
|---|---|---|---|---|
| 100 | 1,000 | 0 | 100% | 0.00 |
| 60 | 600 | 400 | 99.96% | −0.40 |
| 0 | 0 | 1,000 | 99.9% | −1.00 |
An allowance is eligible wagering volume, not a deposit or guaranteed profit. This model uses a count of fully qualifying rounds so it does not invent how a bet crossing an allowance boundary is handled. It does not track resets or enforce account-specific per-bet limits.
Does 100% RTP mean a 50% chance of winning?
No. RTP measures expected money returned, not the fraction of rounds won. As a mathematical example, pick one number from 40 while 10 are drawn: it matches 25% of the time. An illustrative 4× total return on a match and 0× otherwise gives 100% RTP, although 75% of rounds pay nothing. This is an example table, not a saved Duel preset.
A fair expected return can coexist with long losing runs and large session swings. Raising the top multiplier, changing chosen numbers or increasing the stake after a loss does not by itself improve RTP.
Maximum payouts and stake limits
The largest multiplier in the saved set is 1,200×, on ten matches in the Low, Medium and High tables. At a 10-unit stake that gives a nominal 12,000-unit return. An illustrative gross cap of 2,000 reduces it to 2,000; an illustrative net-profit cap of 2,000 permits a 2,010 gross return.
The optional cap is applied to every paytable outcome when calculating main RTP and EV. It is not applied to the separate percentage comparisons. No current maximum stake, award or daily allowance is built into the calculator.
Using another pick count or game
The saved presets cover 7 and 10 picks. Other selections need their own complete table, including zero-paying outcomes. The calculator accepts 1–10 picks in the 40/10 model; these bounds do not establish current operator limits.
The 80/20 option is an illustrative example. Third-party titles, bonus balls, draw-order prizes and progressive jackpots need their own rules. For basic format comparisons, use the crypto Keno calculator.
Can a calculator predict Duel Keno numbers?
No. Under the uniform-draw model, every set with the same number of picks has the same hit distribution. Changing the chosen numbers or using a “hot numbers” list does not change those probabilities. The calculator evaluates payout rules and expected value; it does not reveal future draws.
Changing risk mode affects payouts, not the probability of matching a fixed number of picks. A higher top multiplier alone says nothing about full RTP or the chance of finishing a session in profit.
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Sources and saved-table date
The official Duel game listing, checked on , labels Keno as 100% RTP. The public Zero Edge article explains the operator’s positioning; these pages do not supply a complete current Keno paytable or establish this calculator’s allowance inputs.
The eight preset tables retain the separate snapshot date . Their multipliers have not been reverified against the live game for this update. No preset is assigned to an inside- or outside-allowance regime, and no explanation based on rounding is assumed.
Table returns and worked examples are calculated from their stated inputs using the hypergeometric distribution. KenoCalc.com is independent and is not operated by Duel. See the RTP explanation for the general method.
Frequently asked questions
What does the Duel Keno calculator calculate?
It calculates match probabilities, payouts, full-paytable RTP, house edge and expected net results. Eight saved tables cover Classic, Low, Medium and High for 7 or 10 picks. A separate comparison models 100%, 99.9% or mixed-return sessions.
Is this an official Duel calculator?
No. KenoCalc.com is independent and is not operated by Duel. The saved presets are dated 6 July 2026 and are not a live feed.
Does Duel Keno always return 100%?
The public Duel listing labels Keno as 100% RTP. That label alone does not confirm the conditions for a particular bet. The saved tables calculate to 99.8776%–99.9866% before caps; their allowance regime has not been established.
Is 99.9% the rate after a Zero Edge allowance ends?
This calculator does not establish that as a universal Duel rule. The 99.9% option is illustrative. In the mixed-session mode, enter the RTP assumption for non-qualifying rounds separately.
How does the mixed-session calculation work?
Enter how many whole rounds qualify for 100% RTP and the RTP for all other rounds. The tool uses the same stake per round and weights expected return by turnover. It does not decide eligibility, split a boundary bet or process allowance resets.
Does Zero Edge mean a 50% chance of profit?
No. A 100% RTP means zero expected net loss before costs under that model. It does not mean half the rounds win, guarantee a profit or protect the bankroll from losing sessions.
How are payouts and limits calculated?
Gross return is stake multiplied by the selected hit-count multiplier, reduced by any entered cap. Net profit subtracts the stake. The cap can apply to gross return or net profit, and affects every line in the main paytable calculation.
Can this calculator predict future Duel Keno numbers?
No. Under a uniform independent draw model, previous results do not improve the next-round hit odds of a same-sized selection. The tool analyzes probabilities and payouts, not future numbers.