Free sports betting calculators
Plain-English math for the questions every serious bettor asks. No signup, no email gate, no fluff — just the answer.
Kelly Criterion Calculator
Find the optimal stake size for your edge with full / half / quarter Kelly options and a 100-bet trajectory chart.
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Closing Line Value Calculator
Measure the difference between your bet's odds and the closing line. Single-bet, batch entry, and CSV download. The single best predictor of long-term profit.
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Bankroll Monte Carlo Simulator
Run 1,000 simulated futures to see real risk of ruin, drawdown distribution, and percentile curves. Uses the OddsLab production engine. CSV export.
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Want these calculators applied to every bet you place automatically? See OddsLab plans — Kelly stake, CLV tracking, and bankroll Monte Carlo built into the picks dashboard.