System Bet Optimiser
Compare bookmaker odds to construct the most favourable doubles, trebles and 4-fold combinations, and calculate blended odds across all combinations for each selection. Use the tool to identify the best bookmaker for each combination and build your system bets without manually working through every permutation.
| # | League ▶ | Match ▶ | ▶ | ▶ | ▶ | Best bookmaker ◀ | Blended odds ◀ |
|---|---|---|---|---|---|---|---|
| [1] | BOOKMAKER 3·3.30 | 3.20 | |||||
| [2] | BOOKMAKER 1 / BOOKMAKER 2·3.00 | 3.00 | |||||
| [3] | BOOKMAKER 1·3.60 | 3.48 | |||||
| [4] | — | — |
| Legs | BOOKMAKER 1 ▶ | BOOKMAKER 2 ▶ | BOOKMAKER 3 ▶ | Best bookmaker ◀ |
|---|---|---|---|---|
| [1] [2] | 9.00 | 9.60 | 9.57 | BOOKMAKER 2·9.60 |
| [1] [3] | 10.80 | 10.56 | 10.89 | BOOKMAKER 3·10.89 |
| [1] [4] | ||||
| [2] [3] | 10.80 | 9.90 | 9.57 | BOOKMAKER 1·10.80 |
| [2] [4] | ||||
| [3] [4] | ||||
| [1] [2] [3] | 32.40 | 31.68 | 31.58 | BOOKMAKER 1·32.40 |
| [1] [2] [4] | ||||
| [1] [3] [4] | ||||
| [2] [3] [4] | ||||
| [1] [2] [3] [4] |
Formulas
Let oᵢ,ᵦ be the decimal odds for leg i at bookmaker β, and sₖ be the stake for a combination of k legs.
- • Combined odds at bookmaker β = Π oᵢ,ᵦ for every leg in the combination.
- • Best bookmaker = the bookmaker with the highest valid combined odds for that combination.
- • Blended odds for leg i = Σ (oᵢ at each combination's best bookmaker × sₖ) / Σ sₖ for all valid combinations containing leg i.
- • Doubles total = number of available doubles × doubles stake.
- • Trebles total = number of available trebles × trebles stake.
- • 4-fold total = number of available 4-folds × 4-folds stake.
Count a combination only when at least one bookmaker has valid odds for every leg and a combined price appears in the Combined Odds table. Each combination counts once, even when several bookmakers offer it.
How to use this tool
- Enter your selections in the Matches table and add the available odds for the individual selections from the bookmakers you want to compare. Add, remove and rename bookmakers as needed.
- Review the Combined Odds table to compare each double, treble and 4-fold combination across bookmakers and identify the best bookmaker for each combination.
- Enter your intended Doubles Stake, Trebles Stake and 4-Folds Stake, where applicable.
- Review the resulting system totals and the Blended Odds for each individual market to decide whether the system you have constructed suits your intended approach.
Frequently Asked Questions
What is a system bet?
A system bet combines multiple selections into different betting combinations rather than placing one accumulator containing every selection.
For example, a four-selection system can include doubles, trebles and a 4-fold, depending on the system structureand combinations selected.
This tool helps you find the best bookmaker for each double, treble and 4-fold based on your inputs, so you can manually construct a system across different bookmakers.
Are system bets better than single bets or accumulators?
Compared with a single bet, a system bet involves multiple combinations rather than staking independently on each selection. Most betting strategies generally favour singles because they allow more direct control over staking and risk.
Compared with a single accumulator, a system bet may return something when some selections lose, depending on the combinations included. However, it involves multiple bets, and your total stake can be higher depending on how you structure it.
The System Bet Optimiser compares bookmaker prices and identifies the best bookmaker for each combination. It does not recommend a betting strategy or staking amounts.
Why should I compare system bet odds across multiple bookmakers?
Different bookmakers may offer different odds for the same selections and combinations.
Comparing bookmakers can help you identify more favourable prices for individual doubles, trebles and 4-folds, rather than automatically placing every combination with the same bookmaker.
This tool compares the odds entered for each bookmaker and identifies the bookmaker offering the highest combined odds for each supported combination.
How does the System Bet Optimiser find the best bookmaker?
The tool calculates the standard combined odds for each double, treble and 4-fold by multiplying the individual selection odds entered for each bookmaker.
It then compares the resulting combination prices and identifies the bookmaker offering the highest odds for each combination.
The best bookmaker may differ between combinations because bookmakers do not always offer the same odds for every selection.
Does this tool account for bookmaker-specific combination pricing?
The tool estimates combined odds using the regular multiplication of the individual selection odds.
Some bookmakers may apply adjustments to combination prices, such as rounding down, reducing the combined odds or offering combination-specific bonuses. These adjustments are not included in the tool's calculations.
The results are therefore intended as a comparison based on standard combined odds. Always check the final combination price offered by the bookmaker before placing your bet.
Can I use this tool for a Yankee, Lucky 15 or another system bet?
Yes, you can use the tool to compare the bookmaker odds for the doubles, trebles and 4-fold combinations that make up certain system bets, including parts of a Yankee or Lucky 15.
The tool helps you identify the best bookmaker for each combination, but it does not automatically calculate or manage every traditional system type. You must select the combinations and enter the relevant stakes yourself.
What should I do if a bookmaker does not offer a particular selection or combination?
If a bookmaker does not offer a selection or allow a particular combination, its odds cannot be used for that combination. However, the bookmaker may still offer some of the other combinations.
Check which combinations each bookmaker supports, compare the available prices and confirm the final odds directly before placing your bet.
Can I combine selections from different bookmakers in one accumulator?
No. A standard accumulator must be placed with a single bookmaker. You cannot combine selections from different bookmakers into one accumulator.
This tool compares the prices of complete combinations across bookmakers, helping you identify where each combination is offered at the best odds. It does not combine selections from different bookmakers into a single bet.
Can I use selections from the same match in one accumulator?
Although some bookmakers allow multiple selections from the same match, these bets work differently from standard combinations because the selections are not necessarily independent.
Bet Builders account for the relationship between events in the same match, so their combined odds cannot be calculated simply by multiplying the individual odds.
This tool is not suitable for same-match combinations. Use a Bet Builder Calculator instead.
What are Blended Odds in this tool?
Blended Odds provide a calculated equivalent price for each selection across the system combinations in which it appears.
They help you assess the effective odds associated with an individual selection when it forms part of multiple doubles, trebles or 4-folds.
Blended Odds are a calculated measure based on the combinations and odds entered. They are not necessarily a price offered directly by a bookmaker.
Information only. Check all calculations before placing bets. Odds and market conditions may change. Bet Tools HQ accepts no responsibility for losses arising from reliance on these results.