NFL Expected Value Calculator
Expected value tells you whether a NFL football bet is profitable in the long run. Enter your estimated win probability and the odds offered, and this calculator shows the EV per dollar staked.
Open the Expected Value CalculatorHow to Use This Calculator
- 1Enter the odds offered by the sportsbook.
- 2Enter your estimated true win probability (your edge over the market).
- 3The calculator weighs the payout by your probability against the loss.
- 4A positive EV means the bet is profitable over time; negative means it is not.
Worked Example
Setup: A NFL underdog is priced at +120 and you estimate a true 50% win chance.
Result: The calculator shows a positive EV of about $0.10 per $1 staked - a clear long-term edge.
Frequently Asked Questions
What is a +EV NFL bet?
A positive expected value (+EV) bet is one where your estimated win probability is higher than the probability implied by the odds. Over many bets, +EV wagers are expected to profit.
How do I estimate my true probability?
Sharp bettors use models, the closing line, or no-vig prices from a sharp book as a proxy for the true probability, then compare it against the price they can actually bet.
Does one +EV bet guarantee a win?
No. EV is a long-run average. A +EV bet can lose; the edge only shows up across a large sample of similar bets.