Normally I'm pretty good at this, but I'm wondering if anyone knows of a
site, that would help figure out how much to buy for.

I only need help with 2 items.

Milk
Eggs

Milk I have calculated that you get roughly 16 servings from 1- 4L

and that you get 2 slices of french toast for 1 egg & milk

And for scrambled eggs 1 1/2 eggs per person should be a good count

Now for our first breakfast (french toast), we have 7 cubs, 1 scout and
3 leaders
most of the cubs will probably eat 2 slices with the odd one eating 3
I'm thinking 2 litres of milk should cover drinking and french
toast?????? Am I right?
and 1 dozen eggs should be plenty.

Now the second breakfast (ham, scrambled eggs & cereal for those that
don't like ham & eggs)
we are having 7 cubs, 1 scout, 3 leaders, 7 beavers, 6 parents and 2 leaders
now this is where I need opinions on amount, because i totally confused.
2-4 litres of milk for sure for drinking
1-4 litre for the scrambled eggs
and maybe 1-4 litre for cereal people
and for eggs 3 dozen should do????? based on 1 1/2 eggs per person

Does anyone have a chart for figuring stuff like this out???? I
normally do the shopping for just Cubs, but this camp the baevers are
coming out as well. And i didn't do the shopping.

Thanks for any help,
Val