No signup. No ads. Just fast, accurate tools for sports bettors, prediction market traders, and anyone who thinks in probabilities.
Instantly convert between American (moneyline), decimal, fractional odds, and implied probability. Includes payout calculator and break-even odds.
Use this toolStrip the bookmaker's juice and see the true implied probabilities underneath any betting line. Enter both sides to reveal the fair odds.
Use this toolAlready placed a bet? See exactly how much to wager on the other side to lock in profit or cap your maximum loss. Set your desired profit target.
Use this toolEnter the odds being offered and your estimated true probability. See if a bet is +EV, your edge percentage, and expected profit per dollar wagered.
Use this toolOptimal bankroll management. Enter your edge and odds to see how much of your bankroll to stake for maximum long-term growth.
Enter odds for multiple outcomes to find risk-free bets. Detect arbitrage across field bets, multi-leg strategies, and cross-platform opportunities.
Use this toolBuild a parlay with 2–15 legs in any odds format. See total odds, payout, profit, and estimated house edge instantly.
Use this toolConvert Polymarket cents or Kalshi percentages to American, decimal, and fractional odds. Works both ways — enter odds, get the market price.
Use this toolWorld at Odds is a podcast about putting odds on everything — politics, sports, AI, and whatever else the world throws at us. We use these same tools to analyze real bets on the show.
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