Decimal or “European” odds are a popular and intuitive format for expressing the potential winnings of an a bet. The format is used across Europe, and is the default format on sports betting exchanges.

Unlike other odds formats such as Fractional or American odds, decimal odds represent the total amount that will be paid out to the bettor if their bet is successful, including the original stake.

Decimal odds are presented as a number with two decimal places, such as 2.50 or 1.75. Calculating potential winnings with decimal odds is simple: you multiply the amount of the bet by the decimal odds. For the profit, you then subtract the stake as follows:

Profit = (stake x decimal odds) - stake

For example, if you bet €50 at odds of 2.00, your potential payout would be €100 (€50 x 2.00 = €100). The potential profit would be €50 (€100 return – €50 stake).

As decimal odds represent the total payout, it’s easy to compare odds across different bookmakers. Essentially the higher the decimal odds are, the higher the potential payout is.

Decimal odds can be converted into? percentages (known as the implied probability) using the following formula:

Implied Probability = (1 / decimal odds) x 100

Let’s say you have decimal odds of 2.5 for an event. The implied probability is calculated as: (1 / 2.5 x 100) = 0.4 x 100 = 40%

Fractional odds, also known as traditional odds or British odds, represent the ratio of the amount that will be won relative to the amount staked. They are commonly used in the United Kingdom, Ireland, and other countries that follow the British betting tradition.

Fractional odds are expressed in the form of a fraction, such as 5/1, 3/2, or 7/4. The first number in the fraction represents the amount that will be won if the bettor places a stake equal to the second number. For example, if the odds are 5/1 and a bettor places a stake of ￡1, they will make a ￡5 profit if the bet is successful, plus they will get their original ￡1 stake back, resulting in a total payout of ￡6.

In the example of 7/4 fractional odds, the potential profit is not immediately intuitive. To work out the profit of any fractional odds bet, you can use a simple formula:

Profit = stake x?(numerator / denominator)

Therefore a ￡2 bet at 7/4 stands to make a profit of ￡2 x (7 / 4) = ￡3.50, and a total return of ￡5.50 (￡3.50 + ￡2 stake).

Fractional odds can be converted into percentages (known as implied probabilities) using the following formula:

Implied Probability = (denominator / (denominator + numerator)) x 100

Here, the denominator refers to the number on the right side of the fraction, and the numerator refers to the number on the left side of the fraction.

For example, let’s say you have fractional odds of 1/10, the implied probability of the event occurring is (10 / (10+1) x 100) = 0.909 = 90.90%.

US odds, also known as American odds or moneyline odds, are commonly used in the United States and Canada. They indicate the amount that needs to be staked in order to win $100, or the amount that will be won for a $100 stake.

In American odds, positive and negative numbers are used to indicate the underdogs and favourites in a sporting event.

When a team or player is labeled with a positive number, such as +200, it means they are the underdogs, and the number represents the amount of profit that would be made on a $100 bet.?So, if a bettor places a $100 wager on a team with odds of +200, and they win, they would receive a total payout of $300, which includes the $100 stake and a $200 profit.

On the other hand, when a team or player is labelled with a negative number, such as -200, it means they are the favourites, and the number represents the amount that needs to be wagered to win $100. So, if a bettor wants to bet on a team with odds of -200, they would need to wager $200 to win $100 in profit. If they win the bet, they would receive a total payout of $300, which includes the $200 stake and a $100 profit.

Therefore positive numbers represent underdogs, and the higher the number, the greater the potential payout. Negative numbers represent favourites, and the lower the number, the greater the likelihood of winning, but the lower the potential payout.

Calculating potential profit using American odds is not quite as simple as other odds formats as there are two separate calculations for positive and negative odds.

For positive odds, the formula for calculating profit is:

Profit = (Odds / 100) x Stake

For negative odds, the formula for calculating profit is:

Profit = (-100 / Odds) x Stake

In both cases the stake needs to be added to the profit in order to calculate the return. See the three examples further down.

To calculate the implied probability of American odds, use the following formulas:

• For positive odds, the formula for implied probability is: (100 / (odds + 100)) * 100
• For negative odds, the formula for implied probability is: (odds / (odds – 100)) * 100

For example, for odds of -120, the implied probability would be (-120 / (-120 – 100)) * 100 = 54.55%.

Hong Kong odds are a popular format for expressing the potential winnings of a bet. The format is widely used in Hong Kong and some other Asian countries.

Hong Kong odds are presented as a positive number with two decimal places, such as 0.50 or 1.75. Although very similar to the decimal odds format, Hong Kong odds represent the potential winnings (profit) per unit staked, not the return; this is the fundamental difference.?

The formula for calculating profit from a bet using Hong Kong odds is as follows:

Profit = stake x odds

For example, if you bet HK$100 at odds of 0.50, your potential profit would be HK$50 (HK$100 x 0.50 = HK$50), with a return of HK$150 (HK$50 profit + HK$100 stake).

It’s important to note that the higher the Hong Kong odds, the lower the implied probability of the bet winning. To calculate the implied probability of Hong Kong odds, you can use the following formula:

Implied Probability = (1 / (odds + 1)) x 100

Let’s say you have Hong Kong odds of 0.50 for an event. The implied probability is calculated as: (1 / (0.50 + 1) x 100 = 0.666 x 100 = 66.67%

Malaysian odds, also known as Malay odds, are a type of odds format commonly used in Malaysia and other Asian countries for sports betting.

Malaysian odds are expressed as either positive (+) or negative (-) numbers, with the positive number indicating the underdog and the negative number indicating the favourite. The odds also reflect the amount of payout that a bettor can expect to receive if they win.

For example, if a team is listed at odds of +1.50, it means that a bet of RM1 on that team will yield a profit of RM1.50 if they win. Conversely, if a team is listed at odds of -1.50, it means that a bettor would need to risk RM1.50 to win RM1 if that team wins.

Calculating potential profit using Malaysian odds is not quite as simple as other odds formats as there are two separate calculations for positive and negative odds.

For positive odds, the formula for calculating profit is:

Profit = stake x odds

For negative odds, the formula for calculating profit is:

Profit = stake x (-1 / odds)

In both cases the stake needs to be added to the profit in order to calculate the return. See the three examples further down.

To calculate the implied probability of Malay odds, use the following formulas:

• For positive odds, the formula for implied probability is: (1 / (odds + 1)) * 100
• For negative odds, the formula for implied probability is: (odds / (odds – 1)) * 100

For example, for odds of -1.2, the implied probability would be (-1.2 / (-1.2– 1)) * 100 = 54.55%

For example, for odds of +0.3, the implied probability would be (1?/ (0.3 + 1)) * 100 = 76.92%

The Indonesian odds format, also known as “Indo odds”, is commonly used in Indonesia and other Southeast Asian countries.

In Indonesian odds, the odds are presented as positive (+) or negative (-) numbers. Positive numbers indicate underdogs and potential profit a bettor can earn per 1 unit if they win the bet, while negative numbers represent favourites and the amount a bettor must wager in order to win a profit of 1 unit.

For example, if a football team is listed at +1.50 in Indonesian odds, it means that a bettor stands to profit 1.5 times their stake if the team wins the game. So, if a bettor places a bet of 100,000 Indonesian Rupiah on that team and they win, the bettor will receive 150,000 Rupiah in profit, in addition to their original stake.

On the other hand, if a team is listed at -0.50 in Indonesian odds, it means that the bettor needs to risk 0.5 units to win a profit of 1 unit. So if a bet of 50,000 Rupiah wins, the bettor will receive their original stake plus a profit of 100,000 Rupiah.

The formula for calculating the profit for a bet placed at positive (+) Indonesian odds bet is as follows:

Profit = stake x odds

The formula for calculating the profit for a bet placed at negative (-) Indonesian odds bet is as follows:

Profit = stake x (-1 / odds)

It is worth noting that Indonesian odds are simply American odds divided by 100.?

To calculate the implied probability of Indonesian odds, use the following formulas:

• For positive odds, the formula for implied probability is: (1 / (odds + 1) x 100
• For negative odds, the formula for implied probability is: (odds / (odds – 1))? x 100

For example, for odds of +1.0 , the implied probability would be (1/ 2) x 100? = 50%.?

For odds of -3.0 the implied probability would be: (-3 / -4) x 100 = 75%?

In sports betting, implied odds or “implied probability” refers to the likelihood of a particular outcome occurring, as implied by the odds offered by a betting site. The implied odds are expressed as a percentage.

It’s important to note that betting sites do not usually present odds as percentages. Nonetheless, it’s important for bettors to understand the relationship between odds and percentages (implied odds).

The implied odds can be calculated by the simple formula:

Implied odds = 1 / decimal odds