Our trifecta calculator calculates the bet cost of any trifecta.
A trifecta is a bet where you must select the first three horses in correct finishing order. The cost of a trifecta bet is determined by multiplying the number of possible winning combinations from the selections by the bet amount. A trifecta is a permutation without repetition, so the number of choices reduces as each place is filled. For example, a box trifecta with 5 selections has 60 (5 x 4 x 3) combinations. For a full $1 unit, this bet will cost $60.
There are different types of trifectas, they include: normal trifecta, box trifecta, standout trifecta and roving banker trifecta. Calculating the cost of trifectas where different selections are made for each place is more difficult which is why it is best to use our calculator. The formula for calculating any trifecta bet is:
Trifecta combinations = (A x B x C) – (AB x C) – (AC x B) – (BC x A) + (2 x ABC)