Sports Betting Tools

Plug in your edge, bankroll, and risk tolerance to see the optimal fractional-Kelly wager size. Includes player-prop reduction.

Combine 2–10 American-odds legs and a stake to see the combined odds, implied probability, payout, and profit on any parlay.

Remove sportsbook vig from two-way or three-way markets to find fair no-vig odds — the true, fair odds behind any price. Shows true implied probabilities and the vig percentage.

Enter both sides of a market to see exactly how much vig (juice / hold) the sportsbook is charging, plus the fair no-vig price.

Convert American or decimal odds into implied win probability — and convert a probability back into fair odds.

Enter your original odds and stake plus the current opposing odds to find the hedge stake that locks in equal profit or minimizes loss.

Enter total stake and both sides' American odds to check for risk-free profit and see the optimal stake allocation across two books.