# Odds Calculator & Conveter

## Odds and Probabilities: Odds Formats and Implied Probability

There are three main odds representations used by most bookmakers and betting websites. Let’s run through some examples of **Decimal odds, Fractional Odds and American Odds**:

**Fractional Odds**- This odds format is used primarily in the United Kingdom & Republic of Ireland. Fractional odds quote the potential
**profit**which can be made on a bet if it wins, relative to the stake. *For example if $500 is bet at odds of 2/1 the potential profit is $1000 ($500 * 2) and the total returned is $1500 ($1000 plus the $500 stake).***Decimal Odds**- Decimal betting odds reflect the potential
**return**if a bet succeeds, relative to the stake placed. *For example if £$ is bet at odds of 3.0 the total returned is $15 ($5 * 3)- and the potential profit is £10 ($5 * 3 minus the initial $5 stake).***American Odds**-
- Positive American Odds: These odds reflect how much you win on a single $100 bet.
*For example, a positive American odds @ +110 would win $110 for a $100 wager.* - Negative American Odds: The odds indicate how much you must bet in order to make $100 profit. For example a wager on a team with American odds of -90 would win $100 on a $90 bet.

- Positive American Odds: These odds reflect how much you win on a single $100 bet.
**Implied Probability**- Odds correlate to probability e.g a 2/1 bet is expected to win twice in every 3 attempts, hence the probability is 33.33%.

Fraction | Decimal | American | Implied Probability |
---|---|---|---|

1/5 | 1.20 | -500 | 83.3% |

2/9 | 1.22 | -450 | 81.8% |

1/4 | 1.25 | -400 | 80% |

2/7 | 1.29 | -350 | 77.8% |

3/10 | 1.30 | -333.3 | 76.9% |

1/3 | 1.33 | -300 | 75% |

4/11 | 1.36 | -275 | 73.3% |

4/9 | 1.44 | -225 | 69.2% |

1/3 | 1.33 | -300 | 75% |

5/4 | 2.25 | 125 | 44.4% |

11/8 | 2.38 | 137.5 | 42.1% |

9/1 | 10.00 | 900 | 10% |

10/1 | 11.00 | 1000 | 9.1% |

20/1 | 21.00 | 2000 | 4.8% |

50/1 | 51.00 | 5000 | 2% |

100/1 | 101.00 | 10000 | 1% |

1000/1 | 1001.00 | 100000 | 0.1% |