Every tool in one place

Find the expected value and edge of any bet from its odds and your win probability.

Remove the sportsbook's vig with four methods (multiplicative, additive, power, Shin) to get true fair odds.

Size bets with full, half or quarter Kelly from your edge and bankroll.

Check whether two prices form an arbitrage and split your stake for a locked-in return.

Convert American, decimal and fractional odds and see the implied probability.

See how much margin a sportsbook keeps on any two- or three-way market.

Combine legs into parlay odds, payout and implied win chance.

Find the expected value of a profit boost from the boosted and opposing prices.

Lock in profit on an open bet or futures ticket: the exact hedge stake and the result either way.

Turn a sportsbook bonus (free) bet into cash: hedge stake, locked profit and conversion rate.

Every parlay in a round robin by 2s, 3s or more: number of bets, total stake and payouts.

Win rate each teaser leg needs to break even at any price and number of legs.

How much your price beat the closing line, the best long-run predictor of profit.

Win percentage needed at any price, and your ROI at your real win rate.

Stake split for a middle between two lines: what you lose if it misses and win if it hits.

Fair over/under odds for count props like shots, strikeouts and threes from a projected average.

Split one stake across several outcomes so each pays the same.

What an open bet is really worth right now, to judge a sportsbook's cash-out offer.

Turn your bankroll into a unit size and see how long it lasts.