Tools
Free betting tools
Real calculators — no signup, no paywall, no popups. Coming online through Phase 1.
EV Calculator
Expected value, fair odds, and edge from American odds plus your win probability.
Odds Converter
Convert between American, decimal, and implied probability.
Parlay Calculator
Multi-leg payouts with a correlation warning.
Kelly Criterion
How much of your bankroll to bet, given your edge.
No-Vig Fair Odds
Strip the juice from a two-way market to find the fair line.
Hold Calculator
The book's margin (hold), overround, and vig from a market's prices.
Hedge Calculator
Whether and how much to hedge after a line moves.