Margin Calculator
Margin Calculator
Calculate betting margins and market efficiency
Need to convert odds formats? Try our Odds Converter
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How to Use The Margin Calculator
Follow these simple steps to calculate betting margins
Enter Odds
Input decimal odds for each outcome
Review Results
See margin and market efficiency
Analyze Market
Compare margins across bookmakers
Make Decisions
Choose the best betting options
Understanding Betting Margins
Learn how bookmaker margins work and affect your betting
What is a Betting Margin?
A betting margin is the percentage built into odds by bookmakers to ensure profit. It represents the difference between the true probability of outcomes and the probability implied by the odds offered.
The margin is essentially the bookmaker's commission and determines how much they expect to profit from each market. Lower margins mean better value for bettors.
Frequently Asked Questions
Common questions about betting margins and market efficiency
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