Betting Calculators
Bonus Bet Conversion Calculator
Calculate how much guaranteed profit you can extract from free bets and bonus bets. Find the optimal lay stake and see your conversion rate.
How to Use This Calculator
- Select the bonus type: Stake Not Returned (SNR) or Stake Returned (SR)
- Enter the bonus/free bet amount
- Enter the back odds from the bookmaker
- Enter the lay odds from the betting exchange
- Enter the exchange commission rate
- View the lay stake, guaranteed profit, and conversion rate
Formula
SNR Lay Stake = Bet Amount × (Back Odds - 1) / (Lay Odds - Commission Rate)
SR Lay Stake = Bet Amount × Back Odds / (Lay Odds - Commission Rate)
Guaranteed Profit = min(Back Profit, Lay Profit)
Conversion Rate = (Guaranteed Profit / Bet Amount) × 100%
Frequently Asked Questions
What is bonus bet conversion?
Bonus bet conversion is the process of turning a free bet or bonus bet into real cash by placing opposing back and lay bets. The conversion rate tells you what percentage of the bonus value you can extract as guaranteed profit.
What is a good conversion rate?
For SNR (Stake Not Returned) free bets, a typical conversion rate is 60-80%. For SR (Stake Returned) free bets, conversion rates of 80-95% are achievable. Higher odds generally give better conversion rates for SNR bets.
Should I use higher or lower odds?
For SNR free bets, higher odds (5.0+) give better conversion rates but require larger lay liability. For SR free bets, odds don’t significantly affect conversion rate. Find a balance between good conversion and manageable liability.
What is the difference between SNR and SR?
SNR (Stake Not Returned) means if the free bet wins, you only get the profit, not the stake back. SR (Stake Returned) means you get the full payout including the stake. SR bets are worth more and convert at a higher rate.