Im probably being dense here but......
My motherinlaw always made this awesome french dressing,hubby and I love it.But its full of sugar,so i made it with splenda and it still tastes awesome.My question is , I dont know how to figure out the calories fat etc per serving??

French Dressing
1c sugar I used Splenda
1/2c ketsup- I used Heinz onecarb ketsup
1/2c vinegar
1TBSP worcheshire sauce
1Tbsp onion
1/4tsp salt
1c oil- I used canola

What I always do is go to Fitday and load in all the ingredients to get the counts, then you just divide it by the number of servings. It takes a few minutes to do it though.