Enter the number of servings the original recipe yields:
Enter the number of servings you will need for your crowd:
Then click outside the box.
This is the number you use to multiply the quantities when converting:
For convenience sake, round the number up to the next whole number.

An example would be if your original, family size recipe, called for 3 cups of flour. This recipe originally serves 4 people. But you want to change it to serve 100 people. Enter the number 4 into the first box, then enter 100 in the second box. Click outside of the box. The number in the third box should then be 25. You would multiply the three cups of flour times 25 to get the amount of flour needed for 100 servings.