Original calculator
Side-bet paytable analyzer
A 25-to-1 or 40-to-1 payout sounds large in isolation. This tool asks the missing question: how often does the event actually occur?
One-event model
Use this for a simple side bet with one winning event and one losing event. Enter the probability as a percentage and the net win payout as “to 1.”
Worked benchmark: Dragon 7
In the standard eight-deck analysis of the Dragon 7 wager, a winning Banker three-card 7 occurs about 2.2534% of hands. At 40-to-1, the published house edge is about 7.61%. The default values above reproduce that logic approximately.