# Lucky 15 Calculator ## What is a Lucky 15 bet

Lucky 15 bets fall in to the category of “Full cover bet with singles”. It consists of four selections, combined into 15 separate bets. One four fold, 4 trebles, 6 doubles and being a full cover bet with singles you also have 4 single bets. Lucky 15’s are also the equivalent of a Yankee bet but with singles. Our lucky 15 calculator will also help with bets involving each-way, rule 4 and dead heat lucky 15’s

Lucky 15 bets were given their name due to the concessions and bonuses given. If you are lucky enough to have your Lucky 15 have all four selections win, most bookies will add to the luck and give an extra 10% on top of your winnings. Similarly, if you are unlucky and have only one winner, it is common practice to double the odds of that selection. Making you, the punter, feel a little bit lucky.

## Lucky 15 calculations

When calculating a Lucky 15, and other full cover bets with singles, most people do this in a very cumbersome manner. Normally working out each of the separate bets and then adding them together. With a lucky 15 this would require you to calculate 15 separate bets to add together. This is time consuming and unnecessary. Think back to your days in maths class and you will remember your teacher drilling into you the skills of multiplying out the brackets to solve equations. Well with this skill we come up with a very user friendly formula.

(A + 1)(B + 1)(C + 1)(D + 1)

As you can see if you multiple of the brackets you will end up with the equation

ABCD + ABC + ABD + ACD + BCD + AB + AC + AD + BC + BD + CD + A + B + C + D + 1

This is almost exactly the equation used by the people that do the maths the long way. The only difference is the + 1 on the end. Therefore we just need to minus one from our user friendly formula. Giving us

((A + 1)(B + 1)(C + 1)(D + 1)) – 1 = Winnings

Where A, B, C and D are the decimal odds from each of the 4 selections in the lucky 15.

## Example of how our lucky 15 calculator works

The easiest example of a lucky 15 calculation is that of one where all four selections win. Also to make the first example extremely easy, this bet will be placed at a bookie that gives decimal odds and there will be no other complications such as each-way betting, or rule 4 calculations. We will also bet just one unit stake.

The four winners have odds of 4.0, 4.0, 6.0 and 9.0. Now all we have to do is insert one of these numbers into one of the bracketed sections in the lucky 15 equation.

((4.0 + 1)(4.0 + 1)(6.0 + 1)(9.0 + 1)) – 1 = 1749

Now if you enter these numbers into the lucky 15 calculator you will see this is the correct total return. You will also now appreciate how much quicker this is compared to working out all 15 bets individually and adding them together. This equation gives the total returned money, if you wanted to know the total profit you’d also have to subtract the originally stake. In this example of betting 1 unit stake we’d subtract a total of 15 (one unit stake x the fifteen bets). Therefore the total profit would be 1734. Again you can check with our lucky 15 calculator above to see this.

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