How do you convert a foot Lambert to a foot candle?

you cant

Normally you can't. One measures a distance, another an area. My room is 8 feet long and happens to be 70 square feet. You can't convert. However if you are talking about a roll of something - say...

You don't, square feet are a measure of area and cubic feet are a measure of volume.

You don't. Square feet is a measure of area and lineal foot is a measure of length Your question is like asking how do you convert Gallons to Inches

You cannot convert 1 foot into square feet. 1 foot is a one-dimensional measure of length or distance (think of a line). A square foot is a two dimenstion measure of area which requires both length...