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Odds vs Odds Formats (decimal/fractional/american)

What each means, how they relate, and when to use which.

Odds are the price of a bet, expressing how much it pays and its implied probability. Odds formats are the different notations for that same price: decimal, fractional and American. The odds do not change between formats; only how they are written does. One is the value, the other is the notation.

Oddscore
Game math

Odds tell you how likely an outcome is and how much a winning bet pays back relative to your stake.

Use it when Use odds for the price and implied probability of a bet.

Full definition of Odds
Odds Formats (decimal/fractional/american)beginner
Sports betting

The three main ways to express the same price, decimal, fractional and American, each convertible to the others and to an implied probability.

Use it when Use odds formats for the decimal, fractional or American notation of that price.

Full definition of Odds Formats (decimal/fractional/american)

The key distinction

  • Odds are the underlying price; formats are ways to write it.
  • Decimal, fractional and American are the same odds in different notations.
  • Converting formats does not change the payout, only its presentation.

Common questions

What's the difference between Odds and Odds Formats (decimal/fractional/american)?

Odds are the price of a bet, expressing how much it pays and its implied probability. Odds formats are the different notations for that same price: decimal, fractional and American. The odds do not change between formats; only how they are written does. One is the value, the other is the notation.

What is Odds?

Odds tell you how likely an outcome is and how much a winning bet pays back relative to your stake.

What is Odds Formats (decimal/fractional/american)?

The three main ways to express the same price, decimal, fractional and American, each convertible to the others and to an implied probability.

Understanding, not advice. This explains how two terms differ so you can read the industry clearly. Nothing here treats gambling as a way to make money; the maths favours the house. 18+.