Free tool

Bonus Bet Conversion

Model how much cash a stake-not-returned bonus bet converts into after lay odds and exchange commission.

Core formula

Lay stake = bonus x (back odds - 1) / (lay odds - commission)

Convert a stake-not-returned bonus bet

Bonus bet size (AUD)Back oddsLay oddsExchange commission (%)

Output

Lay stake$39.18

Lay liability$211.60

Guaranteed conversion$38.40

Conversion rate76.80%

Better conversion often comes from finding a stronger lay side, not just pushing to higher back odds.

Use Notes

Assumes a stake-not-returned free bet structure.

Compare multiple markets to maximize conversion instead of forcing the first available line.