Model │ Math
Calculator modules
Free calculators for the everyday math of betting markets — prices, stake sizing, expected value. Peak Props model engines are separate.
- MOD 01 Odds Converter American, decimal, fractional and implied probability, converted live, any field. Launch module →
- MOD 02 Odds to Probability Read any odds price as the implied probability, the break-even win rate behind the number. Launch module →
- MOD 03 Vig & Fair Odds Strip the bookmaker margin from a two-sided market to see the fair, no-vig price. Launch module →
- MOD 04 Expected Value Weigh a probability estimate against the offered odds. The gap, in dollars. Launch module →
- MOD 05 Parlay Calculator Combine legs into one price, and watch how the margin compounds across them. Launch module →
- MOD 06 Kelly Stake Size a stake to the size of the edge, not to the strength of a story. Launch module →
- MOD 07 Poisson Calculator Two team xG values in, every score and market probability out, 1X2, BTTS, over/under, and the most likely scoreline. Launch module →
- MOD 08 Monte Carlo Run a betting scenario thousands of times. See the median outcome, the percentile envelope, the worst drawdown, and the longest losing streak you should expect. Launch module →
- MOD 09 Hedge Calculator A futures ticket has run hot and the other side is now offered short. Find the stake that locks an equal profit either way, and the dollar gap between hedging and riding it out. Launch module →
- MOD 10 Arbitrage Calculator Two books, opposite sides, prices that disagree. Sum the implieds, split the stake, and see whether the gap is a real arb or just the vig wearing a different suit. Launch module →