Sports Betting Tools
Free standalone tools for serious bettors — Kelly criterion wager sizing, parlay odds conversion, and devig math. No sign-up required. For live odds, bet tracking, and +EV alerts, see our app features.
Kelly Criterion Calculator
Plug in your edge, bankroll, and risk tolerance to see the optimal fractional-Kelly wager size. Includes player-prop reduction.
Free to useParlay Odds Calculator
Combine 2–10 American-odds legs and a stake to see the combined odds, implied probability, payout, and profit on any parlay.
Free to useDevig Calculator
Remove sportsbook vig from two-way or three-way markets. Shows fair no-vig odds, true implied probabilities, and the vig percentage.
Free to use