Odds Shark Top Sportsbooks
*Terms and Conditions apply to all bonus offers on this website. Visit operator for details.

Betting Odds Calculator: See What You’d Win

Our odds calculator is perfect for showing you how to calculate potential winnings for all types of sport wagers. It indicates how much you will win based on the odds and total wagered. That way, you’ll know the exact amount you would win prior to placing any picks at your favorite sportsbook.

Below is an explanation on how to bet on sports by using our betting odds calculator to get all the data you need to make the right wagers!

Odds Calculator

e.g. -110

e.g. 2.0

e.g. 1/1

e.g. 50%

e.g. 100

How to Use Our Betting Odds Calculator

Step 1:
Enter your odds. Our calculator supports all major formats:

  • American Odds (-400)
  • Decimal Odds (1.25)
  • Fractional Odds (1/4)
  • Implied Probability (80%)

Most betting sites offer each odds option. It’s entirely up to you which type you prefer. We use the American style here at Odds Shark.

Step 2:
Enter the amount of money you wish to bet. Our calculator will take care of the rest. You’ll see how much money you’ll win, and the total payout you’d receive. We set the bet amount to $100, but you can enter any amount you want as long as your bankroll can handle it.

Format Definitions: Odds and Probabilities

There are three methods of stating odds that most bookmakers and websites support. Implied Probability is also useful when evaluating a bet or checking how likely an outcome is.

American Odds

Positive Figures (+): The odds state the winnings on a $100 bet. Ex: American odds of +120 would win $120 on a $100 bet.

Negative Figures (-): The odds indicate how much must be bet to win $100 profit. Ex: American odds of -120 would win $100 on a $120 bet.

Decimal Odds

Decimals quote the potential return should the bet succeed, relative to the stake. If $10 is bet at odds of 4, the total returned is $40 ($10 x 4) and the potential profit is $30 ($10 x 4 minus the $10 stake).

Fractional Odds

Used mostly in the United Kingdom and Ireland, fractions quote the potential profit should the bet succeed, relative to the stake. If $10 is bet at odds of 3/1, the potential profit is $30 ($10 x 3) and the total returned is $40 ($30 plus the $10 stake).

Implied Probability

Odds correlate to probability. A 4/1 bet is expected to win one in every five attempts, therefore the probability is 20%.

Odds Conversion Table

FractionalDecimalAmericanImplied Probability
1/51.20-50083.3%
2/91.22-45081.8%
1/41.25-40080%
2/71.29-35077.8%
3/101.30-333.376.9%
1/31.33-30075%
4/111.36-27573.3%
4/91.44-22569.2%
5/42.2512544.4%
11/82.38137.542,1%
9/110.0090010%
10/111.0010009.1%
20/121.0020004.8%
50/151.0050002%
100/1101.00100001%
1000/11001.001000000.1%

Using Moneyline Odds

The moneyline is one of the most common bets. This is a straight-up bet. All you need to do is pick the winning team.

Let’s say you want to bet on an NBA game. The odds would look something like this:

Boston vs New York: Moneyline
OptionOdds
BostonEVEN
New York-120

If you want to wager $100 on the Knicks to win, you would type -120 in the American Odds section and 100 in the Bet Amount ($) section. You’ll see that you’d get a payout of $183.33. You would get your initial $100 back plus your winnings of $83.33.

If you bet $100 on the Celtics, you would type +100 (EVEN) in the American Odds section and 100 in the Bet Amount ($) section. You’ll see that you’d get a payout of $200.00. You would get your initial $100 back plus your winnings of $100.

Totals

Totals or OVER/UNDER betting is when you wager on the combined score of the two teams competing in any given game, and whether the total will be OVER or UNDER the sportsbook’s prediction.

The amount that is set by the oddsmakers is based on how they foresee a game unfolding from a scoring perspective.

At betting sites, Totals bets would look something like this:

Boston vs New York: Total
OptionOdds
OVER 104.5-110
UNDER 104.5-110

You would type -110 in the American Odds section to see how much you’d win based on the amount wagered. If you believe the combined score for both teams will be 105 points or more, you would bet the OVER. If you think the combined score for both teams will be 104 points or less, you would bet the UNDER.

Point Spreads: Which Team Will Cover?

For point spread bets, the oddsmaker adjusts the line so that the underdog gets an advantage.

The odds would look like so:

Boston vs New York: Point Spread
OptionOdds
Boston +3.5-115
New York -3.5-105

You would enter -115 in the American Odds section if you believe Boston will cover or enter -105 in the American Odds section if you think New York will cover.

If you bet on the Knicks, then they would have to win by four points or more. If you bet on the Celtics, they would need to win outright or lose by three points or less for you to win your bet.

Prop Odds: Team and Player Milestones

Prop betting is a wager based on occurrences or non-occurrences during a game or season. These incidents may not correlate with the outcome of a game or even the final score unlike point spreads, totals or straight-up bets.

Props are what we call novelty bets because they can consist of individual player or team milestones, and will appear like so at betting sites:

James Harden - Total Points Scored (30.5)
OptionOdds
OVER 30.5 Points-115
UNDER 30.5 Points-115

In this player prop, you’re betting on the number of points that James Harden will score in a game. You can bet OVER or UNDER the oddsmaker’s line of 30.5 points for The Beard.

If you bet OVER 30.5 and Harden scores 31 or more points, then your bet wins. If he doesn’t, it loses.

If you bet UNDER 30.5 and Harden scores 30 points or less, your bet wins. If he scores more, your bet loses.

Futures

The futures wager is ideal if you’re looking to make long-term bets. You would pick the team below you believe is going to hoist the Larry O’Brien Championship Trophy, and enter their odds in the American Odds section.

Odds To Win The NBA Championship
TeamOdds
Los Angeles Lakers +200
Milwaukee Bucks+225
Los Angeles Clippers+300
Boston Celtics+1500
Houston Rockets+1500
Toronto Raptors+1600
Denver Nuggets +2200

Our odds calculator can compute just about everything, including live betting. Live betting lets you wager while the game is going on, for instance to bet on who will score next. However, parlays (more than one bet on a ticket) have a separate betting calculator for more intricate wagers, which allows you to input the odds for each leg of your parlay to quickly calculate the payout of your bet.