Free tool

Odds Converter

Convert between decimal, American (moneyline) and fractional odds, and see the implied probability for any price. Type in whichever format you have — the rest update instantly.

Input format

Odds

Decimal

2.000

American

+100

Fractional

1/1

Implied prob.

50.00%

Implied probability is what the price says the chance of winning is — but it includes the bookmaker's margin. To see the fair probability, run the line through the no-vig calculator.

Odds are just the starting point.

Converting formats is easy. Knowing which of those prices is actually worth betting is the hard part — and that's the whole job of Bull Metrics: comparing every book against the fair line, all day, every day.

See today's value

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