Betting tools

NHL odds calculator

Compare model probability to sportsbook odds and calculate fair odds, implied probability, edge, expected value, and Kelly stake sizing.

Selected team Detroit Red Wings
Team Detroit Red Wings Loaded line -110 Model probability 51.9%
Inputs

Compare model probability to market price

Loaded values can be adjusted. Results update automatically as you type.

Example: enter 61.5 if your model gives the team a 61.5% win chance.
Examples: -110, -145, or +125.
The amount you plan to risk.
Used for Kelly stake sizing.
Fractional Kelly reduces volatility.
Restore the original values passed into the calculator.
Results

Calculated betting metrics

Fair decimal odds -
Fair American odds -
Sportsbook decimal odds -
Sportsbook implied probability - Break-even win rate
Edge -
Value verdict -
Profit if bet wins -
Expected profit -
Expected value -
Full Kelly stake -
Selected Kelly stake -

1. Model win probability

Your model’s estimated chance of the team winning.

2. Fair odds

The no-vig odds implied by the model probability.

Fair Decimal Odds = 1 / Probability

3. Sportsbook implied probability

The break-even win rate represented by the sportsbook price.

Positive odds: 100 / (odds + 100) Negative odds: abs(odds) / (abs(odds) + 100)

4. Edge

The difference between model probability and market implied probability.

Edge = Model Probability − Sportsbook Implied Probability

5. Expected profit and EV

The average estimated profit or loss over many similar bets.

Expected Profit = (Probability × Profit if Win) − ((1 − Probability) × Bet Amount) EV% = Expected Profit / Bet Amount

6. Kelly stake

A bankroll percentage based on edge and payout. Fractional Kelly is less aggressive.

Kelly % = ((b × p) − q) / b

Quick interpretation

  • Fair odds are the no-vig odds implied by the model probability.
  • Edge is the model probability minus the sportsbook’s implied probability.
  • Positive EV means the model considers the sportsbook price favourable.
  • Kelly sizing converts the estimated edge into a bankroll-aware stake suggestion.