Sports bet calculator
See the profit, total return and break-even win rate for one sportsbook bet. Enter American or decimal odds.
Your calculation
A worked example
A $100 stake at +150 earns $150 in profit if it wins. The $250 total return includes the original $100 stake. Decimal odds are 2.50, so the break-even win rate is 1 ÷ 2.50 = 40%.
The math
Profit = stake × (decimal odds − 1). Total return = stake × decimal odds. Break-even probability = 1 ÷ decimal odds.
For positive American odds, decimal odds = 1 + odds ÷ 100. For negative American odds, decimal odds = 1 + 100 ÷ absolute odds.
Common questions
Is profit the same as total return?
No. Profit excludes the stake. Total return includes the original stake plus profit. A $20 bet at +100 has $20 profit and a $40 total return if it wins.
Can I compare different point spreads?
Payout alone cannot compare different lines. A −3.5 spread and a −4.5 spread have different chances of winning. Compare the same market and settlement rules.
Does break-even probability predict the game?
No. It is the win rate required by the price among settled, non-push outcomes. It includes the effect of the offered price and is not a margin-free probability estimate.
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