+100 Odds Meaning
Learn more about odds and what +100 means in sports betting.
betting sites, but you can always do the math to determine how much you can potentially win.
Odds set at +100 are quite uncommon, while odds of -110 are very common for spread bets, total bets, and some moneyline action, depending on the sport. For more details about the nature of negative and positive betting odds, check out our article on the topic.
Implied Probability of +100 Odds
The implied probability of +100 odds is exactly 50%. This means the sportsbook is giving the event an even chance of occurring. Use the formula:Implied Probability = 100 / (odds + 100)
So for +100:100 / (100 + 100) = 0.50 or 50%
Example:
If the New York Yankees are +100 against the Red Sox and you bet $100, you will win $100 and receive $200 in total return if they win.
+100 Odds Compared to Other Odds
| Odds | Implied Probability | Wager | Profit | Total Return |
|---|---|---|---|---|
| +100 | 50% | $100 | $100 | $200 |
| -110 | 52.38% | $110 | $100 | $210 |
| +150 | 40% | $100 | $150 | $250 |
Try our free odds calculator to experiment with different wagers and odds.
Why Are Some Lines Different?
The standard betting line is -110 for most betting types, but you won’t see that everywhere, as mentioned. A moneyline bet is one of the most common betting options, and it is unlikely that you will ever see -110 for that type of bet.
You might also notice that some sportsbooks will be offering betting lines at -105 or -115 as opposed to -110 or +100. Each individual sportsbook sets these lines, and they can change them however they seem fit.
If you are looking at the same game, but it has different betting lines at various sites, always choose the one that provides the most value. Getting a spread wager at -105 as opposed to -110 can really add up in the long run.
+100 Betting Calculator
Use the calculator below to figure out how much you could win when betting at +100 odds or any other odds:
$100
$200
Can Lines and Odds Change?
Betting lines change quite often, and if you are new to sports betting you might be shocked at just how often betting odds and lines change. You might see a different line a few hours, or even a few minutes after you first checked it. This variance is common, and will affect your betting experience, especially in wagerline consensus betting.
Betting odds and lines can change for many reasons, but the biggest reason is based on the action. Sportsbooks are always looking to manipulate the odds to protect themselves from a significant loss or try to get more action on the bet. The more bets are in play, the more money sportsbooks can make.
In certain sports, injuries play a critical role in the changing of odds. Most teams don’t reveal the actual gameday roster until close to game time, and sportsbooks will be forced to make quick adjustments to the odds that they have already listed.
Where You’ll See +100 Odds
- Live betting on even matchups (e.g. UFC, tennis)
- Promotional offers (“Even Odds Boost”)
- Low-vig sportsbooks or reduced juice lines
+100 Strategy Tip
Some value bettors seek +100 lines when they believe their own models or intuition give them better than a 50% chance to win. This is a common +EV (expected value) tactic.
For more guides, strategies, and tips, head over to our sports betting guides.
You can also check out the best available sportsbook welcome bonuses in your state, or sign up with the top online sportsbooks:
- BetMGM Sportsbook
- Caesars Sportsbook
- Fanatics Sportsbook
- FanDuel Sportsbook
- DraftKings Sportsbook
- BetRivers Sportsbook
Happy betting!
