Calculators

Price a market you supply yourself. For searching live prices instead, use the Hedge Finder under Edges, or Promo Optimizer and Boosts & Insurance under Promotions. All arithmetic runs server-side in Decimal, never floating point.

Arbitrage & hedge calculator — 2- or 3-way arbs, hedging a placed bet, bonus bets, Kalshi and Polymarket fees. Instant, no account.

Inputs

A bonus bet returns winnings only, not the stake. Hedging the other side at another book converts most of its face value into cash.

Bonus amount ($)Bet decimal oddsThe promo bet's priceHedge decimal oddsOpposite side, usually another book or an exchangeHedge commission (0–1)Exchange fee on net winnings; 0 for a sportsbookStake is returned (site credit rather than a bonus bet)

Result

Enter values and calculate.

Free tools and guides

Positive EV bet finder — sportsbook and exchange prices that beat de-vigged sharp odds
Low hold bet finder — the cheapest two-way markets across books, for clearing a rollover
Hedge calculator — how much to bet on the other side of a bet you already placed
Hold calculator — any market's hold (vig) and its no-vig fair odds
Matched betting — what it is and how it works at US sportsbooks