Free tools

Free tools for quant bettors.

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Kelly Calculator

Compute fractional Kelly stake size from your edge, the offered odds, and your bankroll. Shows full vs 0.25× / 0.5× Kelly so you can see the variance tradeoff.
CLV Tracker

Paste a list of bets (odds taken, closing odds, stake). See aggregate CLV%, per-bet breakdown, and whether your strategy is beating the close.
EV from Odds

Convert decimal / American / fractional odds to implied probability + expected value, given your model's estimate. Strip vig from two-way markets.
Vig Stripper

Strip bookmaker margin from a two-way market and recover the implied true probability. Compare offered odds to the no-vig fair line.