Specialty
Calculate a Forecast
Forecast (exacta) racing payout from two horses' prices and stake.
Calculate a Teaser
US teaser payouts for 6, 6.5, 7, 10 or 13 points moved.
Calculate a Tricast
Tricast (trifecta) racing payout for three horses in order.
Calculate Over/Under
Totals payouts from the line, both prices and stake.
Calculate a Lay Bet
Exchange lay stake, liability and profit matched to a back bet.
Calculate Asian Handicap
Settle an Asian handicap from line, odds and final score.
Calculate Bonus Bet Value
Locked-in value of free and bonus bets, plus the optimal lay price.
Calculate Matched Betting
Optimal lay stakes for qualifying and free-bet matched betting.
Calculate Poisson Odds
Model scorelines and results from each side's expected goals.
The tools standard calculators leave out.
Matched betting
Back at the book, lay at the exchange, and extract free-bet value at near-zero risk. Watch the qualifying loss, conversion rate (typically 70-85%) and net profit.
Asian handicaps
Goal lines remove the draw; quarter lines (-0.25, -0.75) split your stake across two handicaps for half-win/half-lose outcomes.
Frequently Asked Questions
What is matched betting?
Matched betting is a strategy that uses bookmaker free bets and promotions to generate guaranteed profit. It works by placing a qualifying bet with a bookmaker (to unlock a free bet) and then laying the same outcome at a betting exchange to eliminate risk. When the free bet is awarded, you repeat the process — back with the free bet, lay at the exchange — to extract a guaranteed profit from the free bet value.
Is matched betting risk-free?
When done correctly, matched betting is mathematically risk-free because every bet is covered. However, there are practical risks: human error (placing the wrong bet), odds changing between placing back and lay bets, and bookmakers limiting or closing your account if they detect matched betting patterns. Following a systematic approach and double-checking every bet minimizes these risks.
What is a free bet (bonus bet) and how do I convert it to cash?
A free bet or bonus bet is a promotional offer from a bookmaker that lets you place a bet without risking your own money. If the free bet wins, you typically receive only the profit (not the stake). To convert it to cash, place the free bet on a high-odds selection and lay the same outcome at a betting exchange. Our calculator determines the optimal odds and lay stake to maximize your cash extraction, typically 70-80% of the free bet value.
What are Asian handicap bets?
Asian handicaps eliminate the draw outcome by applying a goal handicap to one team. A -0.5 handicap means the team must win outright. A -1.0 handicap means they must win by 2 or more goals. Quarter handicaps (e.g. -0.75) split your stake between two adjacent handicaps. Asian handicaps offer only two outcomes (win or lose), which typically results in better odds and lower bookmaker margins compared to traditional three-way markets.
What are quarter Asian handicaps?
Quarter handicaps (e.g. -0.25, -0.75, +1.25) split your bet equally between two whole or half handicaps. A -0.75 handicap splits your stake between -0.5 and -1.0. If the team wins by exactly 1 goal, you win the -0.5 portion and push (get your stake back) on the -1.0 portion, so you win half and draw half. This creates partial win/loss scenarios that are unique to Asian handicap betting.
How does a betting exchange work?
A betting exchange lets you bet against other bettors instead of against a bookmaker. You can either back (bet for an outcome to happen) or lay (bet against an outcome). The exchange takes a small commission on winnings (typically 2-5%). Exchanges are essential for matched betting because they allow you to lay bets. The most well-known exchanges are Betfair, Smarkets, and Betdaq.
What percentage of a free bet can I convert to cash?
Typically 70-85% of the free bet value can be converted to cash, depending on the odds available and the exchange commission rate. Higher odds on the back bet (free bet) result in a higher conversion rate but also require a larger lay liability at the exchange. Our calculator finds the optimal balance, showing you the exact lay stake needed and the guaranteed profit for any odds combination.