How Do Football Betting Odds Work? American Odds Explained

American odds tell you exactly how much you risk and how much you win. Once you see how the numbers work, every line on a sportsbook makes sense immediately.

What Does -110 Mean in Football Odds?

The minus sign means you're the one laying money. A -110 line means you wager $110 to win $100 profit. That extra $10 above even money is the sportsbook's cut — called the vig or juice. It's baked into almost every spread and over/under you'll see.

Flip it to a plus sign and the math reverses. +150 means a $100 bet wins you $150 profit. Plus odds mark the underdog; minus odds mark the favorite.

How Does the Vig Work?

Picture a standard two-sided market — say, a point spread with -110 on both sides. If the book takes $110 from each side, it pays out $210 to the winner but collected $220 total. That $10 difference is the house edge, which works out to roughly 4.55% on an even two-sided market.

You don't pay a separate fee. The vig is hidden inside the number itself. That's why understanding odds is really understanding how the sportsbook gets paid. For a deeper look at how spreads are set, read about what a point spread is and how it works.

Positive vs. Negative Odds: A Quick Example

• -200 — risk $200 to win $100; heavy favorite
• -110 — risk $110 to win $100; standard spread line
• +130 — risk $100 to win $130; moderate underdog
• +300 — risk $100 to win $300; big underdog

If you're new to picking sides without a spread, the moneyline bet explained for beginners walks through why many first-timers start there.

Do Odds Change Before Kickoff?

Yes. Lines move as money comes in, injuries are announced, and weather changes. The final number posted before the game kicks off is called the closing line. The odds you locked in when you placed your bet are the ones that count for your ticket, regardless of where the line ends up.

How Football Odds Work in Parlays

When you combine bets on one ticket, the vig compounds. Each leg adds another layer of sportsbook margin, so the effective house edge grows with every selection you add. That's a key reason parlays are exciting but mathematically punishing over time. Get the full breakdown in our guide on how football parlays work and where the hidden vig lives.

Do You Need to Know Odds Before Signing Up?

It helps. Before you deposit, run through the beginner's guide to placing your first football bet online so you know exactly what you're looking at on the bet slip. Also confirm that online sports betting is legal where you live — check whether football betting is legal in your state before creating an account.

Operators like FanDuel, DraftKings, BetMGM, Caesars, and ESPN Bet are licensed across multiple states; verify availability on your state regulator's active-license list before depositing. For a side-by-side look at your options, see the best sportsbooks for football betting right now.

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