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Sports betting tools can help you make the most of sports betting apps and online sports betting websites. They are popping up all across the US. Many states already have sports betting in some format, and more are on the way. State legislatures are beginning to grasp the large opportunity presented by sports as eager bettors await regulation in their home states.

As a result, the US is becoming a hotbed for sports betting, and many of the states that have sportsbooks allow betting online. This means bettors can place wagers online via desktop or mobile devices, making sports betting easier than ever.  Plus, playing at legal, licensed, and regulated sportsbooks keeps you safe as a player.

Luckily, there’s a wide variety of options to choose from.

Simply put, sports betting is weaving its way into many corners of the US. Below we have created exclusive sports betting tools and calculators to help you bet better!

What Types Of Sports Betting Tools & Calculators Are There?

Sports Betting ToolsWhat It Does
MoneylineThe most straightforward calculator of them all. Simply enter your odds and the wager, and see the potential win.
ArbitrageThis calculator will help you determine if betting on two different sides on the same match on two different sportsbooks will move the odds to give you a guaranteed profit.
MartingaleThis calculator will determine how much you’ll need to wager to recoup losses.
Odds ConverterAn automated way to convert a form of odds into a different form. For example, American odds to decimal or fractional odds.
SpreadThis tool will help you compare spreads at different sportsbooks to determine the better bet.
FuturesDetermine implied probability based on all futures odds for a given sport.
Kelly CriterionCalculate how much of your bankroll you should be based on the probability of winning an outcome.
ROI CalculatorCalculate the projected gains from a bet versus the total cost of the bet to determine your potential return on investment (ROI).
3 Way Fair Odds No VigFor events where a tie is possible (like soccer), three way fair odds calculator eliminates the vig and presents the odds as a percentage (implied probability) to better clarify the three options.
Fair OddsThis one also strips out the vig from the odds, but designed for two possible results: win or lose.
Implied ProbabilityImplied probability is simply the American odds presented as a percentage rather than plus (+) and minus (-) lines. 
ParlayBefore you place a parlay bet, use the parlay calculator to ensure you’re taking a higher risk for a worthwhile win potential.
Super Bowl SquaresOnline super bowl squares with friends (no accounts needed)

How To Use An Odds Calculator

Odds calculators help you determine what your payout would be if you were to make a specific bet. You can plug in your desired bet amount and the odds a sportsbook gives you, then the calculator will tell you what you’d win if the bet hit.

Odds calculators are particularly useful if you’re trying to decide between a number of sportsbooks for a specific bet. Different sportsbooks offer different odds, so you can maximize your potential payout if you search for the best odds and use a calculator to help you decide your best path.

We have a number of odds calculators on our site for various types of bets, including moneyline, parlay, and futures calculators.

Moneyline Odds Calculator

Moneyline bets are on a single team to win, making it the easiest calculator to use. Here’s how:

  1. Type your desired bet amount (in USD) into the proper field.
  2. Type the odds as the sportsbook lists them.
  3. The calculator will autofill the rest of the fields and show you how much the bet would pay if you were to win.

Parlay Odds Calculator

If you’re a fan of parlay bets (which combine multiple wagers into one), you can use a parlay-specific calculator. Here’s how:

  1. Plug in your desired bet amount in USD in the proper field.
  2. Enter the odds for each individual leg of the parlay into the moneyline fields. Legs do not have to be moneyline bets; just pull the odds from whichever bets you intend to use as part of the parlay.
  3. Click “calculate” for your combined parlay odds and potential payout.

Check out some of our other odds calculators:

Martingale Calculator

Kelly Calculator

Fair Odds No Vig Calculator

How Sports Betting Odds Are Calculated

If you’re new to sports betting, chances are you’ve been confused by how odds work. They can be complex to understand for a newcomer, but once you understand the basics, you’ll be betting like a pro.

The first thing to know is that odds are typically calculated based on how many people are betting on a certain outcome. So if the Kansas City Chiefs are favored by many bettors to win over the Tamp Bay Buccaneers, the Chief’s odds to win will increase as bettors place wagers on that outcome.

Other factors can come into play, such as team record, past performance, injured players, etc., How the public is betting is often a significant determining factor.

How To Read Odds And Determine Payouts

Sportsbooks display odds as positive and negative numbers, and those odds tell you how much you’ll win if your bet hits. Here’s a scenario to help you understand how they work.

  • Chicago Bears +200
  • Tennessee Titans -230

This setup is showing a moneyline bet, which means those are the odds for either team to win outright. Whenever you see a negative number (in this case -230), that means that team is favored to win the match and a bet of $230 would win you $100. The positive number (+200) shows which team is the underdog and tells you how much you would win if you placed a $100 bet.

How Can I Bet On Sports In The US

Placing a bet is easy at legal sportsbooks. You just have to go through a few steps before you’re all set to wager.

You can access most sportsbooks via desktop, Android, and iOS devices. If you’re using an Android device, head to your preferred sportsbook’s website to get the app. Google doesn’t allow sportsbooks in its Play Store marketplace, but you can download the app directly from the provider’s website.

Once you have the app or have visited the website, you can create your account. It’s a similar process to creating an online banking or social media account. Have your personal information including your SSN ready and the rest will be straightforward. Onscreen prompts will guide you through the process.

If you’re signing up on a mobile device, that’s it! If you’re on a desktop, you may also have to download a geolocation plug-in. This is required to confirm that you are betting from a legal state.


Deposit Funds

Pick your favorite deposit method (so long as it’s available on your sportsbook) and add funds to your account. PayPal, credit/debit cards, and online banking are available at most sportsbooks. 

When you deposit, also check for bonus offers. They can boost your account value and give you extra money to bet with. 


Place A Bet

Now, you’re ready to place a bet! Peruse the available odds and find the bets you might want to place. This is the perfect time to use an odds calculator, especially if you’re using multiple sportsbooks to shop for the best lines. After you’ve calculated your odds and figured out which bet(s) you’d like to place, make your wager. 


Withdraw Your Winnings

If you’re lucky enough to win a few bets, you can withdraw your winnings. PayPal, online banking, ACH e-check, and check by mail are common withdrawal methods, though some sportsbooks offer separate options.

What Sports Can You Bet On In The US?

The nature of legal online sports betting in the US creates a unique landscape in each individual state. Every state can regulate sports betting with its own legislation, meaning some sports that are available for betting in one state may not be available in another.

Professional Sports

Pro sports are fair game pretty much across the board in legal sports betting markets. You can bet on any of the most popular leagues without issue:

Plus many others.

College Sports

NCAA sports are somewhat of a mixed bag. They’re usually available to bet on, but some states put specific restrictions on them.

In Illinois and New Jersey, for example, you can only bet on college match-ups that don’t include a school from the state you’re betting in. So Illinois fans can’t place wagers on games including Northwestern or the University of Illinois, while New Jersey bettors can’t wager on Rutgers or Princeton match-ups.

International Sports

Globally popular sports like soccer, rugby, and cricket are available for betting in most legal markets with few restrictions.


Esports betting runs the gamut from completely legal to prohibited to left out of legislation completely. Before you place an esports bet, make sure you check that it’s legal in your state.

Non-Sporting Events

Elections and awards shows are among the most popular non-sporting events on betting platforms. Not every state allows betting on them, though. It varies by state, so check your local laws or betting sites for more information.

Legal Online Sportsbook Apps In The US: Common Questions

Is online sports betting legal in the US?

Not everywhere. In 2018, the Supreme Court struck down the Professional and Amateur Sports Protection Act. Rather than legalizing sports betting across the board, it put the issue in individual states’ hands.

Many states have legalized online sports betting, and more are working on legislation to do so. While it’s not legal everywhere, sports betting is swiftly making its way to more US markets beyond the two dozen that already allow it.

Where Can I Find Sports Betting Odds In The US?

You can find sports betting odds by visiting the sportsbook website of your choice. They will usually display their odds without requiring you to log in or create an account.

Online resources also exist that compare and contrast the odds at top sports betting platforms. Sports news sites, including CBS Sports and NBC Sports, will often list the lines as well.

How Do You Read Sports Betting Odds?

Using an online odds calculator or by calculating the odds manually. Gaming Today has several odds calculators to choose from.

How to read sports betting odds depends on how the odds are displayed. Decimal, fractional, and American odds all require different math for calculation. However, each are relatively easy to understand.

Which Online Sportsbooks Have The Best Odds?

DraftKings, FanDuel, and BetRivers have the consistently best odds out of all the online sportsbooks in the US market. However, that isn’t always true. In many cases, other sportsbooks will have better odds. The most successful sports bettors compare and contrast different options before placing a bet for that very reason.

What Affects Sports Betting Odds?

Range of factors. Sports betting odds are calculated based on a variety of things including injuries and trades, current team form, the weather, and beyond. How players are betting also determines the odds, which is one of the reasons why you’ll see significantly different odds at one sportsbook versus another.

What Is An Odds Calculator?

An odds calculator helps sports bettors determine their betting strategy. The most basic is a moneyline odds calculator that tells you how much you’ll win based on your bet and the odds. However, different odds calculators have different purposes, such as comparing futures, identifying arbitrage, and more.

When Should I Use An Odds Calculator?

You should use an odds calculator when you want to save time or for when the math is too complex to perform manually. It’s never a bad idea to use an odds calculator, and they can ensure that no mistakes are made in your calculations, eliminating all chances of human error.

What Is The Best Online Sportsbook In The US?

DraftKings Sportsbook. The sports betting website and app that consistently offers the best odds is DraftKings Sportsbook. It also offers a range of betting options, a deep sports selection, and impressive promotions. You can also seamlessly switch between the sportsbook, daily fantasy sports, and casino games (where legal). The DraftKings Sportsbook app is available for iOS and Android.

About the Author
Russ Mitchell

Russ Mitchell

Senior Writer
Russ Mitchell has been a senior writer at Gaming Today since February 2023 after joining Catena Media in 2021. Mitchell's background includes 25 years of news, sports, and gaming industry coverage. In his free time, Mitchell enjoys movies and games, and spending time with his son, Keegan. He roots for Iowa's four Division I programs and is still waiting patiently for the Padres, Chargers, or Clippers to win their first league championship.

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