Proportions for making whipped cream?

[PA Baker]

Is there a general proportion of x amount of whipping cream yields y amount of whipped cream?

I'm making Sofie a 4-layer, 9" cake for her birthday party this weekend and icing/decorating it with stabilized whipped cream and I'm trying to figure out how much I need.

 

[jkath]

Here's probably more than you ever wanted or needed to know about whipped cream

Whipping Cream: Easy How-To Cooking Tips & Advice: RecipeTips.com

 

[PA Baker]

Wonderful! More than I ever thought I wanted to know--but I learned some new, interesting things! Thanks, jkath!