Professional sports betting calculators

Seven free calculators that use the same algorithms as METRIKA. No login, no waiting. Each tool explains its formula and when to apply it.

Value Bet Calculator

Compute the Expected Value (EV) of a bet from its odds and your estimated true probability. Identify mathematically positive bets in seconds.

Compute the optimal stake using the Kelly Criterion formula. Maximises long-run bankroll growth while controlling variance.

Split your stake across multiple selections to lock in the same return whichever wins. Ideal for outrights and futures.

Detect arbitrage opportunities across bookmakers. Calculate the exact stake at each book to guarantee profit regardless of outcome.

Resolve Asian handicaps with .25 / .75 lines including push and partial void. Convert 0.5/-0.5 to its European handicap equivalent.

Compute the implied odds for the Over/Under market by line and compare with the Poisson model to spot value.

Convert odds between decimal, fractional, American (moneyline) and implied probability percentage.