The full toolkit

Decimal · Fractional · American · HK · Indo · Malay · Implied %

Calculate payout, profit, and implied probability for a single wager.

Combine up to 20 selections. All must win.

Trixie, Yankee, Lucky 15/31/63, Heinz, Goliath, Patent, Canadian, Super Heinz.

Win + Place bet, common in horse racing and golf.

Split your stake across opposing outcomes to lock in profit.

Cover an existing bet with an opposing wager.

Bet on multiple outcomes in one market, split by probability so any winner returns the same profit.

Strip the bookmaker's overround to reveal the "true" odds.

Compare your true probability estimate with the offered odds.

Optimal bet size for your edge. Full / half / quarter Kelly options.

Track your performance, ROI, and win rate. Data stored locally on this device only.

Football scoring model from team expected goals.

True theoretical value of a stake-not-returned free bet.

Bookmaker overround per market. Lower = better for the bettor.