Over/Under Betting Tool
Calculate totals-market payouts from the line, both odds and your stake.
How to Use This Calculator
- Choose your odds format
- Enter the line (for example 2.5 goals or 47.5 points)
- Enter the over and the under odds
- Enter your stake
- Review the payouts, the profits, and the 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 bets, also known as totals, are wagers on whether the combined score, goals, or points in a contest will exceed (over) or fall short of (under) a posted line. Lines such as 2.5 in soccer or 47.5 in the NFL are the most common, and the half-point guarantees there is no push outcome.
What happens 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 and your stake is refunded with no profit. Half-point lines ending in .5 sidestep this altogether. Quarter lines like .25 and .75 split your stake, so half pushes while the other half wins or loses.
Why do over/under odds usually sit around -110?
Bookmakers position the line to draw roughly even money on each side. The -110 price, which equals 1.91 in decimal, embodies the standard 4.5-5% bookmaker margin. Sharper books may post -105 or even -102 on their headline markets.
How do you uncover value in totals?
Measure 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, that can signal value. Always compare several books to secure the best line and price.