With this system bets calculator you can plan your system bets efficiently and during (or after) them you can calculate easily your winnings. Calculate Accumulators, Lucky 15's, Each Ways, Doubles, Trebles and more. Supports EW, Bonuses, Dead Heats, Non Runners, Football and Horse Racing. Calculate bet returns for Accumulator, Lucky 15, Patent, Round Robin and 33 other bet types, with more settling options than any other online bet calculator. Quick Bet Calculators · Betting Glossary · Help · Accessibility. Number of Selections Click on Compute On the calculation result page you get the following information: Include Bonus where applicable No Yes. For example, if a selection has lost, then Win Odds is not relevant, so that option is removed from the form. Let's say it was Spurs. This value will only exceed 1 if joint favourites are involved in a dead heat for first place. Reset All Choose a Bet Type.