Odds Conversion

There are three types of odds. We-The Europeans are very familiar to Decimal odds (i.e, 2.05). And some of us are familiar to Fractional odds or USA odds. Some bookmakers offer their odds in USA odds and do not offer its converted type into Decimal. As a result of it, it becomes very hard work to calculate them and some of us can understand what +110 means as Decimal while he is preparing his coupon. Here we try to examine the calculation of each conversion. It is a bit long but give it a chance.

# Decimal Odds (1.20, 2.30, 10.00, etc.)

I think people are familiar to Decimal Odds more than the others. Lets examine a sample to understand better. *Say a bookmaker offers 2.30 for a team to win the game and you bet 100$ on that team at 2.30. If that team wins the game, you get 230$ (including the stake) back. Your profit is 230$ - 100$ = 130$.

# US Odds (+100, -135, +300, etc.)

The ones who bet on US Sports are familiar to these odds. There are two types of US Odds such as positive and negative odds. The mentalities are different.

Positive US Odds:

Positive odds may have plus (+) in front of the numbers (such as +100, +135, +300, etc). Suppose a bookmaker offers +150 odds for a team to win the game and you bet 100$ on it. If the team wins, you will get 250$ including your stake. Here the mentality is:

�Stake 100$ to make 150 profit + 100$ stake back� or �Stake 100$ to make (positive odds number)$ profit + 100$ stake back�

Formula:

Decimal Odds = (Positive US Odds + 100) / 100

Lets calculate the example above; we staked 100$ to win at +150 odds.

( 150 + 100 ) / 100 = 2.50

Negative US Odds:

Negatice odds always have minus (-) in front of the number. Suppose a bookmaker offers -120 for a team to win the game. Here, the mentality is the exact opposite. The mentality is:

�Stake 120$ to make 100$ profit + 120$ stake back� or �Stake (negative odds number)$ to make 100$ profit + negative odds number)$ stake back�

Formula:

Decimal Odds = (Negative US Odds + 100) / Negative US Odds

Lets calculate the example above; we staked 100$ on the team.

Here we ignore the minus� (-).

( 120 + 100 ) / 120 = 1.83

# Fractional Odds (5/4, 12/7, 7, etc.)

This is also known as UK Odds. It is too easy to understand and calculate.. The mentality is:

�Profit/Stake�

For example, a bookie offers 5/4 for a team to win a game. Stake 5x to make 4x profit and 5x stake back. Say you bet 100$ on the team to win at 5/4. It means if the team wins, you will have 225$ including the stake. Take a look at the formula below:

Formula: (First Number + Second Number) / Second number

Lets calculate the example above; we staked 100$ on the team.

(5+4)/4=2.25

As a result, you will get 225$ back for your 100$ stake..

If you see only one number as a fractional odds (like 2, 5, 12, etc.), add 1 into the number and you will have the odds..

For example, a bookie offers 4 for a team to win a game. It means stake 1x to make 4x profit. If you put 100$ on the team and the team you bet wins, you get 500$ back.

4+1=5.00

As a result of, you will get 500$ back for your 100$ stake.