Dutching is a betting strategy where you back multiple selections in the same event so that no matter which one wins, you achieve a profit. To master this strategy, you must understand your total market coverage. By calculating the combined implied probability of all your picks, you can determine exactly how much of the “market pie” you are buying.
Our Dutching Implied Probability Calculator allows you to input multiple sets of odds to see the cumulative percentage chance of at least one of your selections winning.
Dutching Implied Prob
Dutching implied probability shows the total market coverage when betting on multiple selections. If the probability is below 100%, there is no overround.
How to Use the Calculator
This tool is essential for bettors who want to “cover the field” in horse racing or multi-outcome sports markets:
- Enter Your Odds: Input the decimal odds for each selection you are betting on, separated by commas (e.g., 3.0, 4.5, 8.0).
- Analyze the Total: The calculator converts each price into a percentage and sums them up to show your Combined Probability.
- Identify Value:
- Below 100%: You have potentially found a “Value” situation where the combined odds are in your favor.
- Above 100%: This represents the bookmaker’s margin (overround). The higher this number, the harder it is to profit long-term.
The Power of Combined Probability
If you bet on two horses with odds of 3.0 (33.3% chance) and 4.0 (25% chance), your total probability of winning is 58.3%. Knowing this number allows you to compare it against your own estimations of the race to see if the combined risk is worth the potential reward.
Frequently Asked Questions (FAQ)
What is the “Overround” in Dutching?
The overround is the amount by which the total implied probability of all outcomes in a market exceeds 100%. For example, if the sum of all horses’ probabilities is 105%, the bookmaker has a 5% margin. In a successful Dutching strategy, you aim to keep your specific selections’ combined probability well below the total market price.
Can I use this for arbitrage?
Yes. If you input the odds for every possible outcome in an event and the result is under 100%, you have found an arbitrage opportunity (an “arb”), where a profit is guaranteed regardless of the result.
How many selections can I Dutch at once?
There is no mathematical limit, but as you add more selections, your qualifying loss (cost) increases and your total potential profit decreases. Most professional bettors stick to 2–4 selections to maintain a high enough return on investment (ROI).