To calculate the potential payout of a winning parlay bet, you need to first determine the odds for each individual bet within the parlay. Start by converting these odds into their decimal format (for example, American odds of +150 becomes 2.50 in decimal odds, and -110 becomes 1.91). Multiply the decimal odds of each selection together to find the combined odds of the parlay. After obtaining the combined odds, you can calculate the potential payout by multiplying the total stake (the amount you wagered) by the combined odds. This will give you the total payout amount, which includes your original stake, and you can subtract the stake to find the net profit.