Online Tools

    Bet Calculator

    Calculate singles, parlays and system bets from odds, stake, selection status and optional exchange commission, with an odds-format converter.

    All odds multiply. One losing leg loses the whole parlay.

    Advanced: exchange/platform commission

    Selections (3)

    Decimal 1.85 - implied probability 54.1%

    Decimal 2.10 - implied probability 47.6%

    Decimal 1.65 - implied probability 60.6%

    №1 · 1.85Pending№2 · 2.10Pending№3 · 1.65Pending
    Total stake
    $1,000.00
    Potential payout
    $6,410.25
    Potential profit
    +$5,410.25
    Final odds / ROI
    ×6.41 • 541.0%
    Stake$1,000.00Return$6,410.25+$5,410.25 profit
    №SelectionOddsStatusEffective multiplier
    1Selection 11.85Pending×1.85
    2Selection 22.10Pending×2.10
    3Selection 31.65Pending×1.65
    Odds format converter
    DecimalFractional (UK)AmericanHong KongImplied probability
    1.501/2-2000.5066.7%
    1.9110/11-1100.9152.4%
    2.001/1+1001.0050.0%
    2.503/2+1501.5040.0%
    3.002/1+2002.0033.3%
    5.004/1+4004.0020.0%

    Implied probability is calculated from decimal odds. It is the market-implied chance with sportsbook margin still included.

    Calculate payout for singles, parlays and systems

    Bet calculator intent is practical: enter odds, choose single/parlay/system, set stake and see potential payout, net profit and ROI. Selection statuses help review settled or partially settled slips.

    For parlays, decimal odds multiply across active legs.

    Odds formats

    The tool supports decimal, fractional, American and Hong Kong odds formats, then converts each selection to decimal odds internally for consistent payout math.

    The calculator does not predict outcomes. Betting can lead to financial loss and should be limited to legal adult use.

    Frequently Asked Questions

    Sources and References

    Calculations are based on the listed reference sources. Links open in a new tab.

    Updated:

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