Convert between probability and decimal betting odds.
How It Works
How Odds Calculator Works
Decimal odds are simply the reciprocal of the implied probability — a lower probability of an outcome happening corresponds to higher decimal odds, since a rarer event pays out more if it does occur.
FAQ
Frequently Asked Questions
What do decimal odds actually represent?
Decimal odds show the total payout (including your original stake) for every 1 unit wagered — odds of 4.00 mean a winning $1 bet returns $4 total, implying the bookmaker's assessed probability of that outcome is 25%.
Do bookmaker odds reflect true probability exactly?
Not quite — real bookmaker odds are adjusted to include a built-in margin (the "overround"), so the implied probabilities across all outcomes in a market typically add up to slightly more than 100%.
