Calculator
Standalone tools — EV, Kelly, implied probability, odds converter.
Expected Value Calculator
Offered Odds (Decimal)
True Win Probability
Stake ($)
Kelly / Stake Calculator
Offered Odds (Decimal)
True Win Probability
Bankroll ($)
Kelly Fraction
1/4 Kelly (recommended)
1/3 Kelly
1/2 Kelly
Full Kelly (risky)
Implied Probability & Odds Converter
Decimal Odds → Implied Prob
American Odds → Decimal
Probability → Fair Odds
Vig / No-Vig Calculator (Two-Way Market)
Odds Side A
Odds Side B