Odds Converter
Every odds format is the same statement in a different alphabet. The probability underneath is what you are actually being quoted.
+150, 2.50 and 3/2 are one price written three ways, and every one of them quotes a 40.00% chance. Risking $100.00 to make $150.00 looks generous only because the price says this side lands that rarely.
The format is just how the book writes it. Once I know what it pays, there's nothing else in the number.
The price
Type into either odds field and the other follows. Decimal is the working format: American and fractional are both read off it.
One price, three ways
What the price quotes
Implied probability is the break-even rate: how often this price has to land just to keep you level. A posted price also carries the book's fee, so the two sides of a real market add up to more than a hundred percent. Strip that out before you treat this as a true chance.
What the ticket pays
How the conversion works
Fractional odds are the profit part of the decimal price, reduced to its smallest whole-number ratio — which is why an exact conversion sometimes prints an unfamiliar fraction rather than the tidy one a UK book would show.
Converting a price does not improve it. If the number you typed came off a betting board, its implied probability still has the book's fee inside, so it overstates the real chance of the outcome. It also says nothing about whether the price is any good — that only shows up when you compare it with the same bet somewhere else, or with a fair number you priced yourself.