Free sports betting calculators
Parlay payouts, PrizePicks EV, odds conversion, fair odds without the vig, expected value and Kelly sizing — instant, free, no sign-up.
Parlay calculator
Payout and true odds for any parlay, from American or decimal odds.
Open →PrizePicks calculator
Power and Flex payouts, the chance your entry cashes, and its expected value.
Open →Odds converter
American, decimal, fractional and implied probability — convert any one to the rest.
Open →No-vig fair odds calculator
Strip the bookmaker's margin from a two-way market to see the fair price.
Open →Expected value calculator
What a bet is worth on average, given the odds and your win probability.
Open →Kelly criterion calculator
How much of your bankroll a bet is worth, with fractional Kelly.
Open →See tonight's props
Projections, hit rates and slips for every game — free during the beta.
Open BlackoutFor research and entertainment only. 21+.