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Betting math calculators

The same calculators SharpLine runs, free and live. De-vig, expected value, Kelly stake, parlay tax, closing line value, and implied probability. Run your own numbers. If ours don't match, don't pay us.

De-vig calculator
Strip the bookmaker margin to find no-vig fair odds.
Expected value calculator
Compare a book price to Pinnacle’s fair line.
Kelly stake calculator
Size a bet for long-run growth, full or fractional.
Parlay tax calculator
See the combined odds, fair value, and parlay tax.
Closing line value calculator
Measure your price against the closing line.
Implied probability calculator
Convert American odds to their break-even win rate.

The numbers check out. Now let SharpLine run them live.

SharpLine runs this math against every sportsbook, every minute, anchored to Pinnacle's fair line.

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