All calculators
Browse all betting, poker and probability calculators in alphabetical order. Compare odds, payouts, staking systems and risk, or verify provably fair results.
- 1-3-2-6 System CalculatorA positive progression that locks profit on a hot run.
- Asian Handicap CalculatorSettle any handicap line, including quarter splits.
- Aviator & Crash Game CalculatorThe real odds behind any cash-out target.
- Bankroll TrackerLog every bet, see your true win rate and ROI.
- Betting ROI Calculator — Yield & Net ProfitMeasure realized betting yield from net profit and total stakes.
- Blackjack Chart: Basic Strategy & TrainerThe correct play for every hand, and drills to learn it.
- Bonus & Wagering CalculatorSee the real value of a deposit bonus after its rollover.
- Closing Line Value CalculatorMeasure how much you beat the closing odds.
- Contest & Raffle Win Probability CalculatorAll tickets have equal chances and winners are drawn without replacement.
- D'Alembert System CalculatorA gentler progression: +1 unit on a loss, −1 on a win.
- Dice CalculatorWin chance, multiplier and edge for any target.
- Dutching CalculatorBack several selections for the same profit whichever wins.
- Each-Way (EW) Bet Calculator — Returns & PayoutSplit a win-and-place bet and see every return.
- Elo Calculator — Expected Score & Rating ChangeThe logistic Elo model turns the rating difference into expected score E.
- Expected Value (EV) CalculatorSee if a bet is +EV before you place it.
- Fibonacci System CalculatorSee how the 1-1-2-3-5 progression stakes and recovers.
- Fold Equity CalculatorThe fold % a bluff or shove needs to profit.
- Free Bet CalculatorTurn a stake-not-returned free bet into locked cash.
- Hedge & Cash-Out CalculatorBet the other side to lock profit or cap your loss.
- Kelly Criterion CalculatorFind the mathematically optimal bet size for your edge.
- Keno Odds CalculatorThe probability of hitting your spots.
- Labouchère TrackerRun the cancellation system without losing your place.
- Lay Bet CalculatorLay stake, liability and a balanced exchange green book.
- Lucky 15 Calculator — Returns & ProfitSettle four selections as 15 win-only bets, including singles.
- Martingale CalculatorSee how fast the doubling progression eats your bankroll.
- Matched Betting CalculatorPrice the qualifying bet and what a free bet really extracts.
- Mines CalculatorSurvival odds and the multiplier at every step.
- Odds ConverterConvert decimal, fractional and American odds — and read the true implied probability.
- Parlay Calculator (Accumulator)Combine several legs into one price, payout and profit.
- Paroli System CalculatorAnti-martingale: press your wins, risk only the base.
- Plinko CalculatorWhere the ball actually lands, and what it pays.
- Poker Bankroll CalculatorHow many buy-ins your bankroll really needs.
- Poker Equity Calculator — Flop, Turn & RiverThis heads-up Hold’em calculator enumerates every possible remaining board for two known hands.
- Poker Odds Calculator (Pot Odds & Outs)Equity for every draw, the pot odds you need and the verdict.
- Provably Fair Calculator & Seed CheckerVerify a server-seed commitment, reproduce the HMAC and inspect a reference game outcome.
- Risk of Ruin CalculatorThe exact odds your bankroll busts before you walk away.
- Risk of Ruin SimulatorRun 10,000 sessions and see what really happens.
- Roulette Odds & PayoutsEvery bet's payout, true odds and house edge.
- Round Robin Bet CalculatorUS-style system bets: price combinations of parlays and compare possible returns.
- Slots RTP & Loss CalculatorWhat an RTP really costs you per hour.
- Staking Plan (Units) CalculatorTurn a bankroll into disciplined unit stakes.
- Surebet (Arbitrage) CalculatorSplit your stake across books for a guaranteed profit.
- Vig & No-Vig CalculatorStrip the bookmaker margin and reveal the fair odds.