Sports Betting American Odds Calculator

Positive odds - 100 divided by (the american odds plus 100), multiplied by 100 to give a percentage e.g. American odds of 150 = (100 / (150 + 100)). 100 = 40%. Online Sports Betting at SportsBetting.ag. SportsBetting.ag is your ‘top spot’ for the best in sports betting excitement. No matter what your favorite game might be you’ll find it on the board along with a huge variety of sports and betting options.

Sports betting made easier.

  • Betting Tools - Convert odds and size your bets appropriately.

    • Odds Converter - Convert american odds to decimal odds and figure out your required win percentage to turn a profit
    • ROI Calculator - Find your expected ROI given the odds of a bet and your assumed win percentage
    • Kelly Criterion Calculator - Calculate the optimal bet size to maximize your long term growth rate of your bankroll
    • Vig Free Line Calculator - Figure out how much vigorish you are paying on a particular bet and solve for the implied win percentage of each team
    • Hedge Calculator - Solve for the optimal hedge amount to maximize the expected growth of your bankroll
    • Line Shopping Calculator - Compare betting lines between sharp and square books to see if you found a +EV bet and calculate an optimal kelly bet size at the square book if you did.
    • Confidence Interval Calculator - Calculate a 95% confidence interval for your winrate to give you an idea of what your expected winrate in the future may be
    • T-Test Calculator - Find out if a variable or winrate is statistically signifcant or not
    • Bet Simulator - Simulate thousands of bets using a variable or fixed bet sizing with various ROIs to determine your expected variance and bankroll growth going forward
  • Odds Comparison - Fade the public and view betting line history.

    • View live sports betting lines odds data from 5Dimes
    • View line history to see how the odds have changed over time including obscure prop bets for free
    • View ticket betting percentages. Fade the public and bet on low betting percentage sides
  • Bet Tracker - Track and share your bets.

    • Hand grade your bets to catch your bookie's autograding mistakes
    • Mobile friendly and autocomplete for many fields unlike excel
    • View charts and stats of your bets
    • Tag your bets with various keywords and then filter them later to see how they do
    • Track a handicapper's bets and see how they do over time
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Moneyline Odds Calculator

Sports Betting American Odds Calculator
Convert the amount wagered and the odds into possible winnings. Works in reverse too. Enter the amount you want to win and the odds to see the amount you need to wager. Use American odds -110, +110, etc.

How To Calculate Betting Odds


The long awaited parlay calculator is here! Use American odds (-110, +200, etc.) to combine up to a 10 way parlay. Winning total is dynamically calculated after each entry.
Sports betting american odds calculator

This is a great tool when betting the over/under. Use this calculator during the game to judge the pace of play and see if the outcome will be greater or less than your over/under wager.

Need another calculator? Bet I can make it! @breakingodds

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Sports Betting American Odds Calculator Free


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Odds Calculator And Payout American Odds

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Betting Odds Converter