How to Read and Use Them
Understanding how betting odds work is the foundation of successful sports betting — with crypto or any other currency. Odds tell you two things: how likely the platform believes an outcome is, and how much you will win if your bet is correct. This guide explains all three main odds formats and how to use them when betting with cryptocurrency.
The Three Odds Formats
| Format | Example | Most Common In | What It Means |
| Decimal | 2.50 | Europe, most crypto platforms | Multiply stake by odds to get total return |
| Fractional | 6/4 | UK traditional bookmakers | Numerator divided by denominator = profit ratio |
| American (Moneyline) | +150 or -200 | USA | + means profit per $100; – means stake needed to profit $100 |
Decimal Odds — The Crypto Standard
Most crypto sportsbooks display decimal odds. They are the simplest to work with mathematically and are the default format on virtually all European and global platforms.
How to Read Decimal Odds
Decimal odds of 2.50 mean: for every 1 unit you stake, your total return (stake + profit) is 2.50 units.
| Stake | Odds | Total Return | Profit |
| 0.01 BTC | 2.50 | 0.025 BTC | 0.015 BTC |
| 100 USDT | 1.85 | 185 USDT | 85 USDT |
| 0.1 ETH | 3.20 | 0.32 ETH | 0.22 ETH |
| 50 USDT | 1.50 | 75 USDT | 25 USDT |
Formula: Total return = Stake × Odds | Profit = (Stake × Odds) – Stake
Understanding Implied Probability
Every set of odds implies a probability. Converting odds to probability helps you assess whether a bet offers value:
Formula: Implied probability (%) = 100 ÷ Decimal odds
| Odds | Implied Probability | What It Means |
| 1.50 | 66.7% | Platform thinks this outcome has a 66.7% chance |
| 2.00 | 50.0% | Even money — platform thinks 50/50 |
| 3.00 | 33.3% | Platform thinks this outcome has a 33.3% chance |
| 5.00 | 20.0% | Platform thinks this is a 1-in-5 chance |
| 10.00 | 10.0% | Long shot — 1-in-10 chance per platform |
The Bookmaker Margin (Overround)
Sportsbooks build a profit margin into their odds. If you add up the implied probabilities of all outcomes in a match, they will total more than 100% — the excess is the bookmaker’s margin.
Example: A match has three outcomes. The bookmaker’s implied probabilities are: Home win 50%, Draw 30%, Away win 30% — total 110%. The excess 10% is the bookmaker’s margin.
Lower margins mean better value for bettors. Crypto sportsbooks often have lower margins than traditional bookmakers — another reason experienced bettors prefer them.
Value Betting with Crypto Odds
A value bet exists when you believe the true probability of an outcome is higher than what the odds imply. This is the cornerstone of profitable long-term betting.
Example: A crypto sportsbook offers Chelsea to win at odds of 2.50 (implied probability: 40%). You believe Chelsea has a 50% chance of winning based on your research. Your expected value is positive — this is a value bet.
For a full guide to value betting: Value Betting with Cryptocurrency [INTERNAL LINK]
Crypto Odds Calculator
| If your stake is… | And odds are… | Your total return is… | Your profit is… |
| 10 USDT | 1.50 | 15.00 USDT | 5.00 USDT |
| 10 USDT | 2.00 | 20.00 USDT | 10.00 USDT |
| 10 USDT | 3.00 | 30.00 USDT | 20.00 USDT |
| 0.001 BTC | 2.50 | 0.0025 BTC | 0.0015 BTC |
| 0.001 BTC | 5.00 | 0.005 BTC | 0.004 BTC |
See also: Football Crypto Betting Strategies [INTERNAL LINK] | Best Crypto Football Betting Sites [INTERNAL LINK] | Complete Guide [INTERNAL LINK — PILLAR]
18+ | Understanding odds does not guarantee profit | Gamble responsibly | Set a budget before you start
