Over/Under Betting Explained: How Totals Work
Over/under betting explained in plain English: how totals work, how to read the odds, when bets push, and how to track your totals picks in units.
Over/under betting is one of the simplest ways to bet on a game: you ignore who wins and only predict whether the two teams combine for more or fewer points than a number the sportsbook sets. This guide explains how totals work, how to read the odds, when a bet pushes, and how to track your totals picks properly.
With the NFL and NBA seasons in full swing and a busy Thanksgiving slate coming up, totals are on every betting menu right now. Here is what you need to know before you bet one.
What Over/Under Betting Means
An over/under, also called a total, is a bet on the combined score of a game. The sportsbook posts a number, and you choose a side:
- Over: you win if the combined score is higher than the number.
- Under: you win if the combined score is lower than the number.
It does not matter which team scores the points. A 30-14 blowout and a 22-22 tie in regulation both add up to 44.
Totals exist in almost every sport. NFL and NBA totals count points, MLB and NHL totals count runs and goals, and soccer totals count goals. In the UK you will often see the same market listed as "over/under goals" or "total goals".
How to Read a Totals Line
A typical NFL total looks like this:
| Bet | Line | Odds |
|---|---|---|
| Over | 44.5 | -110 |
| Under | 44.5 | -110 |
The number (44.5) is the total. The odds (-110) tell you the price. At -110 you risk $110 to win $100. If the bet wins, you get back $210: your $110 stake plus $100 profit. In decimal odds, -110 is 1.909.
If you are new to American odds, our guide on how to read betting odds covers the conversions in more detail.
Why the half point matters
When a total ends in .5, one side has to win, because a game cannot finish with half a point. If the line is 44.5 and the final is 24-20 (44 points), the under wins.
When the total is a whole number, a push is possible. If you bet over 44 and the final score adds up to exactly 44, your stake is refunded. Nobody wins and nobody loses.
The Vig on Totals
Both sides at -110 might look like a fair coin flip, but they are not. The sportsbook builds a margin, called the vig, into the prices.
Here is the math at -110 on both sides:
- Implied probability of the over: 52.38%
- Implied probability of the under: 52.38%
- Combined: 104.76%
That extra 4.76% is the book's margin. It also means that at -110 you need to win 52.38% of your bets (not counting pushes) just to break even. You can check any price with the break-even calculator.
Lines are not always -110 on both sides. If the over is -120 and the under is +100, the market leans toward the over. Removing the vig from those prices gives a fair probability of about 52.2% over and 47.8% under, with a margin of about 4.55%.
Does Overtime Count Toward the Total?
In most US sports, yes. Standard game totals in the NFL, NBA and MLB include overtime and extra innings unless the bet terms say otherwise. That can be painful for under bettors, since a tied game heading to overtime adds points to a total that might have been safe.
A few exceptions to know:
- Soccer: most books settle full-time totals on 90 minutes plus stoppage time. Extra time and penalty shootouts usually do not count.
- NHL: books handle shootouts differently, and some offer separate regulation-only (60-minute) markets. Check the house rules.
- First-half and quarter totals: these only count the period they cover, so overtime does not affect them.
House rules vary between sportsbooks, so always check how your book settles a market before you bet it.
Types of Totals Bets
The full-game total is the most common, but there are several related markets.
Team totals
A team total is the over/under for one team's score only. If a team total is 23.5, you are betting on whether that team scores 24 or more (over) or 23 or fewer (under). The opponent's score does not matter.
First-half and period totals
These cover a slice of the game: the first half, a single quarter, the first five innings in baseball, or one period in hockey. Some bettors like first-half totals because they remove overtime and late-game garbage time from the equation.
Alternate totals
Many books let you move the total up or down for a different price. Moving an NFL over from 44.5 down to 41.5 makes it easier to win, so the odds get shorter, for example -200. Moving it up to 47.5 makes it harder, so the odds get longer, for example +150. Shorter odds mean a higher implied probability (66.67% at -200), and longer odds mean a lower one (40% at +150).
Player and prop totals
Over/unders also apply to individual stats, like passing yards or points scored. We cover these separately in player props explained.
What Moves a Total
Totals change between when they open and when the game starts. This is called line movement. Common reasons include:
- Injuries: a missing starting quarterback or a top scorer can lower the expected score.
- Weather: strong wind and heavy rain can make passing and kicking harder in outdoor football games.
- Pace and style: teams that play fast or take lots of shots tend to create more scoring chances.
- Betting action: when a book takes heavy money on one side, it may move the number.
Getting a better number matters. Over 44.5 and over 45.5 look almost identical, but over the course of a season half-points add up. Comparing prices across books before you bet is a simple habit that helps.
Over/Under Betting Tips for Cappers and Tipsters
If you post totals picks for followers, a few habits make your picks easier to tail and your record easier to trust.
- Always post the exact number and odds. "Over 44.5 (-110)" is a pick. "Take the over" is not, because your followers may get a different line.
- Post the time you made the pick. Lines move, so the timestamp shows the price was real.
- Grade pushes as pushes. Do not count them as wins or losses.
- Keep your stake sizes consistent. Totals are easy to track in units, and flat staking keeps your results honest.
How to Track Your Totals Record
Totals are a clean market to track because each bet has a clear result: win, loss or push. Say you bet 57 totals at 1 unit each, all at -110, and finish 30-25-2.
| Result | Count | Units |
|---|---|---|
| Wins | 30 | +27.27 |
| Losses | 25 | -25.00 |
| Pushes | 2 | 0.00 |
| Total | 57 | +2.27 |
Each win at -110 returns 0.909 units of profit, so 30 wins add 27.27 units. The 25 losses cost 25 units. Pushes are refunded, so your real risk was 55 units, which makes your ROI about 4.1%. Your win rate, excluding pushes, is 54.5%, comfortably above the 52.38% break-even mark at -110.
That record is still a small sample, so read it as a good start rather than proof of an edge. Our guide on how to track your betting record explains units, ROI and win rate in more depth. If you share picks publicly, TailMe lets you show your totals picks as bet slips next to your self-reported record on one link in bio page.
Over/Under vs the Point Spread
Totals and spreads are often listed side by side, and they answer different questions. The spread asks who wins and by how much. The total asks how many points are scored overall. You can bet one, the other or both on the same game.
If you want the spread side explained, see our guide to point spread betting.
The short version
- Over/under betting is a bet on the combined score, not on who wins.
- A total ending in .5 cannot push. A whole number can, and pushes are refunded.
- At -110 on both sides, you need to win 52.38% of decided bets to break even.
- Overtime usually counts in US sports. Soccer totals usually cover 90 minutes plus stoppage time only. Check your book's house rules.
- Post the exact line and odds, grade pushes honestly, and track every pick in units.
Only bet what you can afford to lose. If betting stops being fun, free and confidential support is available.
