Free Bet Calculator Guide
BettingCalculator.ca
A promotional free bet can look like a cash stake on a bet slip, but the amount returned after a win can be very different.
What this free bet calculator assumes
The Free Bet mode models a stake-not-returned promotion. The promotional amount generates winnings but is not itself paid back as cash. It is a simplified explanation of a common offer, not a valuation of every promotion.
Calculate the potential cash winnings
Let B be the promotional amount and D the decimal odds. Cash winnings = B × (D − 1). For positive American odds +A, D = 1 + A/100. For negative odds −A, D = 1 + 100/|A|. Fractional N/M becomes 1 + N/M.
A $100 free bet at +150 has decimal odds of 2.50. Its potential cash winnings are $100 × 1.50 = $150. The promotional stake returned is $0, so the total potential cash received is also $150. A $25 free bet at decimal 2.00 pays $25.
Why there is no conventional ROI
The promotional stake is not money invested from your cash balance in this model. Dividing cash winnings by that promotional amount and calling it cash-stake ROI would be misleading. This mode therefore shows cash winnings, promotional stake and total potential cash received.
Check the promotion before relying on a figure
Minimum odds, expiry dates, qualifying deposits, excluded markets, maximum winnings and wagering requirements may apply. Some offers return bonus funds rather than withdrawable cash. A losing free bet normally generates no winnings; the calculator does not assign a cash refund to it.
The calculator does not model bonus conversion strategies, hedging or cash-outs. Consult the offer and sportsbook settlement terms.
Try the example
Choose Free Bet on the main calculator and enter the promotional amount and odds. All inputs remain in your browser.