If referring to a linear dimension, then it's best to measure it rather than try to calculate it.
If referring to a column of people, then count heads and multiply by 2 . If to quadrupedal
animals, then count tails and multiply by 4 .
to calculate square feet you need a 2d shape
328.084 feet. How do you calculate it? Just type "feet in 100 meters" in the Google search field....
You can't actually go from feet to square feet because feet is distance but square feet is area. but to calculate for example the square feet in a rectangle you would do base times height.
Multiply feet by 0.3048 to get meters.
Feet divided by 39.3701 = meters
Feet divided by 3= yards
You multiply the feet by 0.3048.
You can not calculate feet and liters.
Square feet is how you calculate area. Feet is how you measure a line. To calculate area go: lenth(ft) x width(ft)=area(sq. ft)
1000 feet remains 1000 feet if the distance is measured in feet.
There are linear feet, and square feet, but no "linear square feet".
Divide the number of feet by 3 to get yards.