NFL analytics
How NFL odds work and how to read them
American odds, spreads, totals and prediction-market cent prices all describe the same thing: a probability. Here is how to move between them, strip out the vig, and tell a real edge from a hunch.
Last updated Updated for the 2026 NFL season
Odds are probability in disguise
Every NFL price can be rewritten as a percentage. -150 is 60%. +150 is 40%. -280 is 73.7%. Once a line is a percentage, comparing it to a model number is arithmetic instead of opinion, and the only question left is whether the gap is big enough to be worth risk.
Prediction markets skip the translation entirely. A contract at 42c is a 42% chance. That is why the NFL desk quotes everything in cents: entry, fair value, stop and target all live on one 0-to-100 scale.
Spread, total, moneyline
The spread handicaps margin — a team at -6.5 must win by 7. The total prices combined scoring, and moves most on weather and pace, not on who wins. The moneyline is the straight win price and is the easiest of the three to convert into a probability you can test.
Remove the vig before you compare anything
A two-sided NFL market always implies more than 100%. Add both implied probabilities, then divide each by that sum. Skipping this step is the most common reason a bettor believes he found a five-percent edge that was never there.
Quick answers
How do NFL odds work?
An NFL price tells you two things: which side the market favors and how much you must risk to win a dollar. A minus number is the amount you risk to win $100, so -150 means risking $150 to win $100. A plus number is what $100 wins, so +150 means $100 wins $150. Both are just a probability written in betting shorthand.
How do you read NFL odds?
Read three fields per game. The spread (-6.5) is the handicap the favorite must beat. The total (44.5) is the combined points line. The moneyline (-280 / +230) is the straight win price. A price of -280 implies about a 73.7% chance; +230 implies about 30.3%.
How are NFL odds calculated?
A book starts with a model number, converts it to a price, then adds a margin and moves the line as money and news arrive. Injury reports, weather and late sharp money move a line more than public opinion does.
How do you convert NFL odds to implied probability?
For a minus price: probability = odds / (odds + 100), using the absolute value. -150 becomes 150 / 250 = 60%. For a plus price: probability = 100 / (odds + 100). +150 becomes 100 / 250 = 40%.
What is the vig and how do you remove it?
The two sides of a market add up to more than 100% — that overround is the vig. Divide each side's implied probability by the sum of both. If the two sides imply 55% and 50%, the fair numbers are 55/105 = 52.4% and 50/105 = 47.6%.
How are prediction-market NFL prices different from odds?
A prediction-market contract is quoted in cents from 0 to 100, and that cent price is already the implied probability. 42c means 42%. There is no odds conversion step, which makes edge against a model number easy to read directly in cents.
What is closing line value?
Closing line value is the difference between the price you got and the price the market settled on at kickoff. Consistently beating the close is the clearest sign a process has an edge, and it shows up long before the win-loss record does.
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