What does −110 mean? NFL odds and break-even math
At −110, a bettor generally risks $110 to earn $100 in profit. The total return on a winning $110 stake is $210 because the original stake is returned with the $100 profit.
−110 in one table
| Stake | Potential profit | Total returned if successful |
|---|---|---|
| $11 | $10 | $21 |
| $55 | $50 | $105 |
| $110 | $100 | $210 |
These figures describe the price calculation only; they do not indicate whether a selection is likely to win.
How to calculate implied probability
For negative American odds, implied probability equals the absolute odds divided by the absolute odds plus 100.
−110: 110 ÷ (110 + 100) = 52.38%.
This is the price’s break-even rate before considering pushes. It is not necessarily the true probability of the outcome.
Why both sides can be −110
A sportsbook may list both sides of a spread at −110. Each side then implies 52.38%, for a combined 104.76%. The amount above 100% reflects the quoted market margin. A simple no-vig normalization divides each side by the combined percentage, producing 50% per side in this symmetrical example.
−105, −110 and −120 compared
| Price | Risk to win $100 | Break-even rate |
|---|---|---|
| −105 | $105 | 51.22% |
| −110 | $110 | 52.38% |
| −120 | $120 | 54.55% |
A better point spread can carry a worse price, so compare both terms rather than evaluating either one alone.
Expected-value example
If an estimate were genuinely calibrated at 55% and the price were −110, expected profit per $110 stake would be (0.55 × $100) − (0.45 × $110) = $5.50. At a 50% success probability, the same calculation equals −$5. A model estimate can be wrong; this calculation does not establish that a real selection has an advantage.
Use the American-odds and break-even calculators for other prices.
Frequently asked questions
How much do I win on a $110 wager at −110?
A successful $110 stake earns $100 profit and returns $210 including the original stake.
What is the break-even percentage at −110?
Approximately 52.38%, ignoring pushes.
Is −110 a prediction?
No. It is a price. It does not state the true probability or guarantee an outcome.
Why do the implied probabilities add to more than 100%?
The quoted prices include sportsbook margin. Normalizing both sides can provide a simple no-vig comparison.
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Published by EdgeLine NFL Research on October 8, 2026.