Free Bet Conversion Calculator

Free bet conversion turns a promotional free bet into guaranteed cash by placing the free bet on one side of a market and hedging the opposite side at another sportsbook. Since the free bet costs you nothing, the hedge profit is pure guaranteed money.

A good conversion rate is typically 70-80% of the free bet value. This means a $100 free bet would net you $70-$80 in guaranteed profit. Higher odds on the free bet side (e.g. +300 or more) generally yield better conversion rates.

Free bets usually return only the profit, not the stake. Using longer positive odds (like +300, +400) maximizes the profit portion relative to the free bet amount, resulting in a higher conversion rate. Short odds waste most of the free bet value.

Most sportsbook free bets are "stake not returned" — if the free bet wins, you receive only the profit portion. This calculator assumes stake-not-returned, which is the industry standard. If your free bet does return the stake, your conversion rate will be even higher.