What an NFL moneyline is
A moneyline is a wager on which team will win an NFL game outright. There is no point spread adjustment — a one-point Buccaneers win pays the same as a 30-point Buccaneers win. Pricing is set with American odds: the favorite carries a negative number (-150, -220, -400) reflecting the premium you have to pay to back the more likely winner; the underdog carries a positive number (+135, +180, +350) reflecting the return on a winning bet against the longer odds.
The intuition for the math: minus odds say "this is how much you must wager to win $100." +200 odds say "a $100 bet would win $200 in profit." Negative odds correspond to the favorite (higher win probability, smaller payout); positive odds correspond to the underdog (lower win probability, larger payout). The bigger the gap between favorite and underdog, the bigger the implied probability gap — and the more aggressively the book takes its margin out of the bettor's expected return.
Converting American odds to implied probability
The most useful single skill in moneyline betting is converting prices into implied probabilities. The two formulas:
- For negative odds (favorites): implied probability = (–odds) / (–odds + 100). For example, -150 implies 150 / 250 = 60%.
- For positive odds (underdogs): implied probability = 100 / (odds + 100). For example, +200 implies 100 / 300 = 33.3%.
If you add the two implied probabilities for both sides of an NFL moneyline, you almost always get more than 100% — frequently around 104–106%. That extra 4–6% is the book's vig. A "fair" market priced with no margin would sum to exactly 100%; the difference is what the book keeps. Sharper markets (Pinnacle, Circa, low-juice operators) often run closer to 102%; heavier-hold markets (sportsbooks during peak-public NFL weekends) can run 106% or higher.
For a quick conversion without doing the math by hand, use our odds converter. For deeper reading on what to do with the no-vig number, see our vig and no-vig pricing guide.
Stripping the vig to find fair value
Imagine an NFL moneyline of -150 / +135. The implied probabilities are 60% on the favorite and 42.6% on the underdog — totaling 102.6%, meaning roughly 2.6% combined vig. To strip the vig:
- Divide each side's implied probability by the total. 60 / 102.6 = 58.5%; 42.6 / 102.6 = 41.5%.
- Those are the no-vig probabilities — what the market actually believes each team's win chance is, free of the book's margin.
- Convert back to American odds: 58.5% implied = roughly -141; 41.5% implied = roughly +141.
That -141 / +141 is the "fair line." Compare the fair line to what you can actually bet at across multiple books. If you can get the underdog at +145 anywhere — that's 4 cents above fair — you have positive expected value. Track that gap consistently over 200+ bets and you have an edge. This is the foundation of professional moneyline betting.
When the moneyline beats the spread
Most NFL bettors default to the spread because the -110 / -110 pricing keeps the hold tight on both sides and avoids paying a heavy premium on big favorites. But there are specific spots where the moneyline is the better tool:
Small favorites (under -180). A -3 spread paired with a -150 moneyline often offers nearly identical probability on the side, but the moneyline avoids the "what if the favorite wins by 3 exactly and pushes" scenario and avoids the half-point hook. If you genuinely think the favorite wins outright, the moneyline can be the cleaner bet.
Live underdog plays. Once a game is in progress and a small dog leads by a score, the moneyline reflects the change in win probability sharper than the live spread. Bettors with a directional view on momentum or game script often find live moneylines easier to evaluate.
Large underdogs in close-game spots. A +200 underdog with a defensive-minded coach in a low-total game is the textbook moneyline target. Defensive coaches play the field-position game, run more, throw less risky passes, and produce more close games than the spread suggests. The +200 payout on an outright win — with no concern for spread cover — is sometimes better expected value than taking the +6.5 spread.
When the moneyline is a trap
Three situations where the moneyline is almost always the worse bet:
Heavy favorites at -400 and beyond. Risking $400 to win $100 means you need to win 80% of the time just to break even after vig. Even strong NFL favorites win 75-78% of the time at most. The math on heavy chalk moneylines is structurally unfavorable.
Primetime favorites. Public money piles onto televised favorites (Sunday Night Football, Monday Night Football). The moneyline absorbs that public premium, pushing it 5-10 cents past where the spread would imply. A -180 primetime favorite is often a -160 favorite priced as -180 because of public flow.
Coin-flip games at -120 / +100. When the moneyline is roughly even, the spread will almost always offer better expected value because the spread price (-110 / -110) is tighter than the moneyline (-120 / +100). A +100 dog in a pick'em game is usually a +1 or +1.5 dog at -110 — better expected value, lower risk profile.
Worked example: comparing moneyline to spread
Suppose the Ravens are listed at -3.5 (-110) against the Steelers, with a moneyline of -185 / +160. You believe Baltimore will win, and you're trying to decide between the spread and the moneyline.
- Spread (-3.5 at -110): Risk $110 to win $100. You win if Baltimore wins by 4 or more.
- Moneyline (-185): Risk $185 to win $100. You win if Baltimore wins by any margin.
The moneyline implies roughly 65% Baltimore win probability (after stripping vig). For the moneyline to be the better bet, your estimate of Baltimore's outright win probability must be enough higher than 65% to outweigh the smaller payout. If you think Baltimore wins outright 75% of the time but covers -3.5 only 55% of the time (the spread is high), the moneyline is mathematically the better play. If you think Baltimore covers -3.5 at 60% and wins outright 70%, the spread is better.
The general rule: the more confident you are about the outright winner but the less confident about margin, the stronger the case for the moneyline.
Best sportsbooks for NFL moneylines
- bet365 — consistently the tightest moneyline juice on close games (low combined vig). The price-to-beat on most pick'em and small-favorite markets.
- DraftKings — broadest moneyline market on prop and exotic moneylines (first-half ML, first-quarter ML, divisional ML).
- FanDuel — fastest live moneyline updates, useful for in-play directional plays.
- BetMGM — typically the most generous pricing on plus-money dogs of +150 or higher.
Common moneyline mistakes
- Backing -300 favorites for entertainment. The dollar return is low, the upset risk is real, and the implied math is structurally bad. If you "love" a -300 favorite, the better move is usually to skip the moneyline and bet a player prop or alt spread instead.
- Parlaying short moneylines. Combining three -200 favorites into a parlay produces a roughly +120 payout for what is, mathematically, three coin-flip-ish independent outcomes. The parlay hold eats almost the entire edge. Single bets win.
- Ignoring the no-vig conversion. The price on the screen is not the fair price. Without stripping the vig, you can't compare books or evaluate whether a moneyline offers positive EV.
Frequently asked questions
How do NFL moneylines work?
A moneyline is a bet on which team will win outright, with no margin adjustment. American odds price each side: minus odds show how much you stake to win $100; plus odds show how much you win on a $100 stake. The wider the gap between favorite and underdog, the more lopsided the priced probabilities.
How do I calculate implied probability from American odds?
For negative odds: implied probability = -odds / (-odds + 100). -150 implies 60%. For positive odds: implied probability = 100 / (odds + 100). +200 implies 33.3%. These include the book's vig; strip it out to find the true fair-value probability.
When is a moneyline a better bet than the spread?
On small favorites (under -180) or in spots where you have strong outright-winner conviction but less margin certainty. Large home underdogs in defensive-minded close-game profiles often offer plus-money moneyline value the spread doesn't capture.
What does no-vig pricing tell me?
It strips out the book's commission so you can see the market's true win-probability estimate for each team. Compare your own probability estimate to the no-vig line — if your number beats the no-vig price, you have positive expected value.
Are NFL underdog moneylines profitable long term?
Not as a blanket strategy. Markets price most NFL dogs accurately. The exception is large home dogs in specific situational spots (divisional, primetime, defensive matchups) — those produce some of the few repeatable NFL angles.
Related resources
- Back to the NFL Betting pillar
- NFL Point Spreads — the companion bet type.
- Vig and No-Vig Pricing — strip the commission to see fair value.
- Implied Probability Deep Dive — beyond the basic formulas.
- Odds Converter — American ↔ Decimal ↔ Implied probability.
- Expected Value Calculator — compute EV from your fair-line estimate vs. the book's price.