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Convert any odds and see
the true probability behind the line

Type a price in American, Decimal or Fractional. We show it in every format, plus the chance the price gives, called the implied probability.

Odds converterFree · No sign-up
American
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Decimal
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Fractional
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Implied probability
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Implied probability is 1 ÷ decimal odds. It still includes the bookmaker's cut, so the fair price pays a little more. Find the fair price →

So is this line actually worth backing?

Our model gives each game its own chance to win and checks it against the price. The free picks show the price and what $10 returns.

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How to convert odds
in 3 steps

01

Enter the odds

Type any price, for example -110, 1.91 or 10/11.

02

Pick the format

Tell us whether you entered American, Decimal or Fractional odds.

03

Read the result

Get the equivalent in every format plus the true implied probability.

Worked example

A classic -110 line equals 1.91 decimal and 10/11 fractional. Drop it into 1 ÷ 1.91 and you get an implied probability of 52.4%. You'd stake $110 to win $100. Across both sides of a market those percentages add up to more than 100%; that excess is the book's margin.

Odds conversion:
quick answers

What does -110 mean in decimal odds?

American -110 equals 1.91 in decimal odds, an implied probability of 52.4%. You'd stake $110 to win $100.

How do I work out implied probability?

Implied probability = 1 ÷ decimal odds. For 1.91 that's 1 ÷ 1.91 = 52.4%. Across both sides of a market these add up to more than 100%. The extra is the bookmaker's margin.

How do I convert fractional to decimal?

Decimal = (numerator ÷ denominator) + 1. So 10/11 = (10 ÷ 11) + 1 = 1.91.

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