PAPER TRADING / RESEARCH ONLYNo bets are placed, no sportsbook is connected, and no result here is a prediction or a guarantee. All figures are estimates from a small sample.

Single bet calculator

Enter the price and your own probability estimate.

Odds format

Sportsbook side

Implied / break-even probability
52.38%
Decimal / American
1.909 / -110

Your estimate

Enter a valid probability to see edge, fair odds and EV.

How this is calculated
  • American +A → decimal 1 + A/100; −A → 1 + 100/A.
  • Implied (break-even) probability = 1 / decimal odds (includes the book's margin).
  • Edge = your probability − implied probability, in percentage points.
  • Fair decimal odds = 1 / your probability.
  • EV = p × profit_if_win − (1 − p) × stake. ROI = EV / stake.

Implied / break-even probability comes from the sportsbook's price. Your true probability is your own estimate, and the edge is only as good as that estimate. Results are uncertain, not guaranteed, and this is not betting advice.