Value Betting Calculator

What is Value Betting?

Find bets where bookmaker odds are higher than the true probability. This gives you positive expected value over time. Requires bankroll management and probability estimation. Higher risk than matched betting.

⚠️ Risk Warning

Value betting is NOT risk-free. You can lose money. Only bet what you can afford to lose. This requires proper bankroll management and probability estimation skills.

Compare multiple bookmakers

Bookmaker Odds (Decimal)

True Probability (0-1)

Your estimated true probability (e.g., 0.4 = 40%). Click "Load" to fetch from Betfair or Pinnacle.

Bankroll (£)

Kelly Fraction (0-1)

Recommended: 0.25 (25% of Kelly Criterion for safety)

Load True Probability from Sharp Odds

Source

Market ID

Selection ID

Enter Market ID and Selection ID, then click "Load" to fetch true probability from Betfair Exchange