Free betting odds converter: decimal, fractional, American and implied probability. Enter any value and the rest recalculate instantly.
Decimal odds are the total payout multiplier. Fractional odds show profit to stake (6/4 = bet 4, win 6). American: plus is profit on a 100 stake, minus is the stake needed for 100 profit. Probability = 1 / decimal odds; in real lines the probabilities sum to more than 100% — that surplus is the bookmaker margin.
More detail: odds formats in the glossary.