Pipes have an inner and an outer surface area. Calculate the outer surface area by entering the outer diameter. If you need to know the inner surface area, use the inner diameter.
This calculator uses inches for diameter measurement and feet for the pipe(s) length.
The pipe's circumference and surface area are either inner or outer results depending on which diameter measurement, the inner or outer, you used!!
S = D*π*L where S is the surface area in square units D the pipe's diameter π = 3.14159265 L the length of the pipe
one inch (in) = 25.4 millimetres (mm) one square inch (in²) = 0.00694444444444443 square feet (ft²) one square inch (in²)= 6.4516 square centimetres (cm²) one square inch (in²) = 0.00064516 square metres (m²)