Calculators
Arbitrage, hedge and odds calculators
Free to use with no account. Every calculator takes American or decimal odds.
Arbitrage calculator
Enter the odds for each outcome and a total stake. The calculator splits the stake so every outcome returns the same amount and shows the guaranteed profit. Add a third outcome for markets with a draw.
Total stake ($)
Outcome 1
Odds (e.g. +110 or -120)
Outcome 2
Odds (e.g. +110 or -120)
Arbitrage found: 1.71% marginImplied total 98.29%
Bet $496.00 on Side Areturns $1,016.80
Bet $504.00 on Side Breturns $1,018.08
Guaranteed profit (worst case)$16.80
Rounded stakes total $1,000.00. Rounding can shift profit by a few cents.Hedge and middle calculator
Hedge mode finds the stake on the other side that locks in the same profit whichever side wins. Middle mode shows what an Over and an Under at different lines return, including when the total lands between them.
Original stake ($)
Original odds (e.g. +250)
Hedge odds on the other side (e.g. -150)
Hedge stake for equal profit$210.00
Profit whichever side wins$40.00
Odds converter
Convert between American, decimal and fractional odds and implied probability. The no-vig panel strips the book’s hold out of a two-sided market and shows the fair price for each side.
American
Decimal
Fractional
Implied probability
Remove the vig from a two-sided market
Side A (American)
Side B (American)
Book hold (vig)4.76%
Fair odds, side A+100 (50.0%)
Fair odds, side B+100 (50.0%)