Parlay Calculator
Compute combined parlay odds and payout. See how each additional leg compounds the house edge — parlays carry far more vig than the sum of their parts.
Inputs
Legs2 / 10
#1
#2
Result
Potential payout$364.46
Combined odds (American)+264
Combined odds (Decimal)3.645
Implied probability of parlay27.44%
Effective vig (vs. fair odds)8.89%
Parlays compound vig. Each leg's house edge multiplies together. A 2-leg parlay of -110 legs carries about 9% effective vig (vs. 4.8% per leg). A 5-leg parlay carries about 25%+. Parlays are entertainment products, not profitable strategies for most bettors.
Formula
combined_decimal_odds = product of each leg's decimal_odds potential_payout = bet × combined_decimal_odds implied_probability = 1 / combined_decimal_odds