Choose your odds format — toggle between Fractional (e.g. 5/2) and Decimal (e.g. 3.5) depending on your bookmaker.

Enter each leg of your multiple. Click Add Leg to include more selections — doubles, trebles, accumulators, you name it.

Enter your stake and hit Calculate. You'll instantly see your combined odds, total return, and potential profit.

Switch formats anytime — results update automatically so you can view odds in either format after calculating.