Free sportsbook comparisons, sports betting tools, & more
We research and review sportsbooks, create free tools, and help you compare odds so you can make the most educated sports bets possible.
BEST Sportsbooks of 2021
Sports Betting Calculators
Betting Odds Calculator
Calculate the payout on your bet, convert between odds formats, & see the implied probability
Parlay Calculator
Calculate the payout on your parlay based on the odds of each leg. Works with all odds formats
Hedge Bet Calculator
See the hedge amount that guarantees you the most profit based on your original bet & the hedge odds
Odds Converter
Convert between the three betting odds formats (American, Decimal, & Fractional)
All Sportsbook Reviews
Sports Betting Legality by State
Check if sports betting is legal in your state & navigate to our state-specific sports betting guides
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>> Learn More: Sports Betting Legality by State
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Learn about sports betting
We have a number of sports betting resources to help you learn about how sports betting works, how to increase your chances of winning, and more. Here are some of our top picks:
Free Bets & Betting Offers at Sportsbooks
ABOUT ODDS ASSIST
We created Odds Assist to help bettors make better decisions when it comes to wagering on sports. We collect hundreds of data points on sportsbooks so you can be sure you are wagering your money with the best options available. We have in-depth sportsbook reviews, detailed state betting guides, free tools and calculators, and much more to help you along your sports betting journey.