How this calculator works
The reference table shows the two different $100 comparisons side by side. For a positive line, scale the quoted profit in proportion to your stake. For a negative line, divide the stake by the magnitude of the quote and multiply by 100. Reverse mode scales the stake to a desired profit. The sign describes the quote, while actual losses are the stake paid. All amounts use CAD and exclude fees. Streak probabilities require independent, equally probable win/loss trials.
Formula
Profit per dollar = A/100 for A >= 100; 100/|A| for A <= -100. Decimal odds = 1 + profit per dollar. Implied probability = 1/decimal odds.
Worked example
At -200, a $30 stake earns $15 profit and returns $45. At +150, a $40 stake earns $60 profit and returns $100. A -250 quote requires a $100 stake to target $40 profit.
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Frequently asked questions
Do -200 odds mean I lose $200?
The quote means risking $200 to earn $100 profit if the bet wins. Your own stake controls the amount at risk.
Are +100 and -100 different?
Both describe even money: decimal odds two, with winning profit equal to the stake.
Why reject a quote between -100 and +100?
This tool uses the conventional moneyline range. Use decimal or fractional odds for other representations of the same price.
Can probability mode produce an infinite quote?
A zero probability is rejected because finite odds cannot represent it. At 100% probability the quote has no profit and no finite moneyline, shown as text.