Calculators
The math, made operational. Pure functions on the server; no analytics, no sign-in required.
Blackjack House Edge
Edge by rule variant — 6:5 vs 3:2, S17 vs H17, decks, surrender, and the rest.
Expected Value
Two-outcome EV per bet and per 1,000 bets.
Kelly Sizing
Full and fractional Kelly stake given edge and odds.
Implied Probability & Vig Removal
Decimal/American/fractional → probability; strip the bookmaker's overround.
Risk of Ruin
Brownian RoR for flat-bet AP given edge, std dev, and bankroll.
Bonus Rollover EV
Net EV of a bonus given wagering requirement and game contribution.
Lottery True EV
Lotto Max, 6/49, and provincial scratch — true EV by ticket price and prize structure.
Arbitrage Detector
Two-way and three-way arb across operator decimal odds.