Over/Under Calculator
Totals-market payouts derived from the line, both prices and stake.
How to Use This Calculator
- Select your odds format
- Input the line (for example, 2.5 goals or 47.5 points)
- Input the over and under odds
- Input your stake
- Read off payouts, profits and margin
Formula
Payout = Stake × Decimal Odds
Margin = (1 / Over Odds) + (1 / Under Odds) − 1
Lines ending in .5 cannot push. Lines on whole numbers (2.0, 47.0) push if the total lands exactly on the line — the stake is returned.
Frequently Asked Questions
What are over/under bets?
Over/under (also termed totals) bets wager on whether the combined score, goals or points in a game finishes above (over) or below (under) a posted line. Lines such as 2.5 (soccer) or 47.5 (NFL) are most common; the .5 guarantees no push outcome.
What occurs if the score lands exactly on the line?
When the line is a whole number (such as 2.0) and the total matches it precisely, the bet pushes — your stake is refunded with zero profit. Half-point lines (.5) eliminate this. Quarter lines (.25, .75) split your stake so half pushes while half wins or loses.
Why do over/under odds cluster near -110?
Bookmakers calibrate the line to draw roughly equal action on both sides. Odds of -110 (decimal 1.91) embed the standard 4.5-5% bookmaker margin. Sharp books may post -105 or even -102 on premium markets.
How do you identify value in totals?
Benchmark the bookmaker’s line against a model — Poisson for soccer, points-per-possession for basketball. When your projection diverges from the line by more than the margin, value may exist. Always line-shop across multiple books for the best line and odds.