Totals Over Under

GAME & ENTERTAINMENT – GAMBLING & BETTING MATHEMATIC CALCULATOR Totals Over Under A precise tool.
📖
What is the Totals Over Under & How does it work?

In an over/under market the bookmaker sets a total line (e.g., 45.5 points) and offers separate odds for the “Over” and “Under” outcomes. Bettors choose which side they think the final result will fall on, and the odds reflect the bookmaker’s assessment of the likelihood of each side.

Each set of decimal odds can be converted to an implied probability by taking the reciprocal (1 ÷ odds). This probability tells you how often the outcome would need to occur for a bet at those odds to break even in the long run.

When the two sides share the same stake pool, the break‑even win percentage for the Over side is the proportion of total bets that must be placed on Over for the bookmaker to make no profit. It is calculated by comparing the implied probabilities of both sides.

p_{over}=\frac{\frac{1}{o_{over}}}{\frac{1}{o_{over}}+\frac{1}{o_{under}}}
p_{over} = break‑even win probability for the Over side
⚙️
Parameters
Result —
❓
Frequently Asked Questions
How do I calculate implied probability from decimal odds?
To find the implied probability, divide 1 by the decimal odds. For example, if the odds are 2.0, the implied probability is 50%.
What does 'over' and 'under' mean in sports betting?
'Over' means you bet that the total score will exceed the bookmaker's set line, while 'Under' means you bet it will be lower.
How do I use this calculator for my bets?
Input the decimal odds for both Over and Under, then click calculate to see the implied probabilities for each outcome.
Can I use this calculator for other types of over/under bets?
Yes, you can use it for any type of over/under bet, not just sports. Just input the relevant decimal odds.
What does it mean if the implied probabilities add up to more than 100%?
If they do, it means the bookmaker has a built-in edge, often referred to as the 'vig' or vigorish.
How can I use this information to make better bets?
Compare the implied probabilities with your own assessment of the likelihood. Bet on the outcome where you think the true probability is higher than the implied one.
Is there a limit to how many times I can use this calculator?
No, you can use this calculator as many times as needed for different sets of odds or events.

Results are for informational purposes only and do not constitute professional advice.