Calculator
Odds converter
Convert American odds to decimal odds and to the probability the price implies before the bookmaker's margin is removed.
Converter
Odds → implied probability
American odds to decimal, fractional-equivalent payout, and the probability the price implies before margin is removed.
Negative for favourites, e.g. -145.
- Implied probability
- 59.2%
- Decimal odds
- 1.690
- Payout on 100
- $168.97
- Break-even win rate
- 59.2%
1. Read the sign
A negative American price is the amount you must risk to win 100; a positive price is the amount won on a 100 risk.
2. Convert to decimal
Decimal odds express total return per unit staked, which makes multiplying legs and comparing venues straightforward.
3. Convert to implied probability
Implied probability is the reciprocal of decimal odds. It still contains the operator's margin, so it overstates the true chance.
Sources
No source is connected to this section yet. Nothing here should be read as a current factual claim.
This tool takes no external data. It computes only from the numbers you type, in your browser, and nothing you enter is transmitted or stored.