How to read betting odds
Odds tell you two things: your potential payout and the implied chance of winning. Master both formats and you'll spot value the average punter misses.
Decimal odds
Decimal odds show your total return per unit staked, including your stake. At odds of 2.50, a 10 USDT bet returns 25 USDT (15 profit + 10 stake). The maths is simple: return = stake × odds. Most crypto sportsbooks default to decimal.
Fractional odds
Common in the UK, fractional odds show profit relative to stake. 3/1 ("three to one") returns 3 profit per 1 staked; 5/2 returns 5 per 2 staked. To convert to decimal, divide and add one: 3/1 = 4.00, 5/2 = 3.50.
Implied probability
Odds imply a probability. Convert decimal odds with 1 ÷ odds × 100. So 2.50 implies 40% (1 ÷ 2.50 = 0.40). If you think the true chance is higher than the implied figure, you've found value.
Example: Odds of 2.00 imply 50%. If your analysis says a team wins 60% of the time, that's a value bet.
The bookmaker margin
Add up the implied probabilities of all outcomes and you'll usually get more than 100%. The excess is the bookmaker's margin (or "overround") — their built-in edge. A market totalling 104% has a 4% margin; one at 108% has 8%. Lower margins mean better value, which is why we weight odds so heavily in our rankings.
Finding value
Value betting means backing selections where the odds are longer than the true probability justifies. Compare prices across books, understand the margin, and only bet when you believe you have an edge. Shopping for the sharpest odds — as at Cloudbet — compounds into real money over a season.
Ready to bet? Compare our top-ranked crypto football sportsbooks or read the Cloudbet review — our #1 pick.
Common questions
What are decimal odds?
Decimal odds show your total return per unit staked including the stake. Return = stake × odds.
How do I convert odds to a percentage?
For decimal odds, divide 1 by the odds and multiply by 100. 2.50 becomes 40%.
What is the bookmaker margin?
The built-in edge a book adds — the amount by which all outcome probabilities exceed 100%. Lower is better for you.